117-583: The Foxdale Mines is a collective term for a series of mines and shafts which were situated in a highly mineralised zone on the Isle of Man , running east to west, from Elerslie mine in Crosby to Niarbyl on the coast near Dalby . In the 19th century the mines were widely regarded as amongst the richest ore mines in the British Isles . The origin of mining in the Isle of Man is not recorded, however there
234-400: A consequence of a fall in the price of lead. The Beckwith mine derived its name from William Beckwith. The area where the mine was situated was immensely rich in deposits – 600 tons of ore being recovered before a shaft was sunk. In time over 50,000 tons were extracted which realised approximately £750,000 for the mining company and resulted in great prosperity to the Isle of Man . It was as
351-666: A decision was taken by the directors to wind up the Isle of Man Mining Company. An extraordinary general meeting was held by the directors at the Law Association Rooms, Cook St, Liverpool on the evening of Thursday 6 April 1911 at which a liquidator was appointed for the purpose of voluntary winding up the Company. The Isle of Man Mining Company ceased operations at Foxdale on Friday 28 July 1911. The mines were not closed because they were worked out, but rather because by
468-433: A density of 11.34 g/cm , which is greater than that of common metals such as iron (7.87 g/cm ), copper (8.93 g/cm ), and zinc (7.14 g/cm ). This density is the origin of the idiom to go over like a lead balloon . Some rarer metals are denser: tungsten and gold are both at 19.3 g/cm , and osmium —the densest metal known—has a density of 22.59 g/cm , almost twice that of lead. Lead
585-492: A few radioactive isotopes. One of them is lead-210; although it has a half-life of only 22.2 years, small quantities occur in nature because lead-210 is produced by a long decay series that starts with uranium-238 (that has been present for billions of years on Earth). Lead-211, −212, and −214 are present in the decay chains of uranium-235, thorium-232, and uranium-238, respectively, so traces of all three of these lead isotopes are found naturally. Minute traces of lead-209 arise from
702-482: A lack of strategic value of Man during the era of Britannia. No Roman lighthouses or signal towers have yet been found on Man. Around the 5th century AD, large-scale migration from Ireland precipitated a process of Gaelicisation , evidenced by Ogham inscriptions, and the Manx language developed. It is a Goidelic language closely related to Irish and Scottish Gaelic . In the 7th century, Man came under control of
819-558: A neutron and become thallium-204; this undergoes beta decay to give stable lead-204; on capturing another neutron, it becomes lead-205, which has a half-life of around 17 million years. Further captures result in lead-206, lead-207, and lead-208. On capturing another neutron, lead-208 becomes lead-209, which quickly decays into bismuth-209. On capturing another neutron, bismuth-209 becomes bismuth-210, and this beta decays to polonium-210, which alpha decays to lead-206. The cycle hence ends at lead-206, lead-207, lead-208, and bismuth-209. In
936-466: A polyhedral vertex and contributes two electrons to each covalent bond along an edge from their sp hybrid orbitals, the other two being an external lone pair . They may be made in liquid ammonia via the reduction of lead by sodium . Lead can form multiply-bonded chains , a property it shares with its lighter homologs in the carbon group. Its capacity to do so is much less because the Pb–Pb bond energy
1053-569: A relatively low melting point . When freshly cut, lead is a shiny gray with a hint of blue. It tarnishes to a dull gray color when exposed to air. Lead has the highest atomic number of any stable element and three of its isotopes are endpoints of major nuclear decay chains of heavier elements. Lead is a relatively unreactive post-transition metal . Its weak metallic character is illustrated by its amphoteric nature; lead and lead oxides react with acids and bases , and it tends to form covalent bonds . Compounds of lead are usually found in
1170-579: A result of this discovery that the Manx Northern Railway was founded, and operated mineral trains from Foxdale to Ramsey , where the trains ran along the quayside in order to unload their contents into ships. On the return journey the trains would haul coal to power the pumping houses of the mine shafts. Bibliography Isle of Man The Isle of Man ( Manx : Mannin [ˈmanɪnʲ] , also Ellan Vannin [ˈɛlʲan ˈvanɪnʲ] ) or Mann ( / m æ n / man ),
1287-475: A seventh kingdom, that of the sea, or Neptune . The Isle of Man has a temperate oceanic climate ( Köppen Cfb ). Average rainfall is higher than averaged over the territory of the British Isles, because the Isle of Man is far enough from Ireland for the prevailing south-westerly winds to accumulate moisture. Average rainfall is highest at Snaefell , where it is around 1,900 millimetres (75 in)
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#17328021776581404-437: A significant partial positive charge on lead. The result is a stronger contraction of the lead 6s orbital than is the case for the 6p orbital, making it rather inert in ionic compounds. The inert pair effect is less applicable to compounds in which lead forms covalent bonds with elements of similar electronegativity, such as carbon in organolead compounds. In these, the 6s and 6p orbitals remain similarly sized and sp hybridization
1521-438: A single decay chain). In total, 43 lead isotopes have been synthesized, with mass numbers 178–220. Lead-205 is the most stable radioisotope, with a half-life of around 1.70 × 10 years. The second-most stable is lead-202, which has a half-life of about 52,500 years, longer than any of the natural trace radioisotopes. Bulk lead exposed to moist air forms a protective layer of varying composition. Lead(II) carbonate
1638-452: A structure, with every alternate layer of oxygen atoms absent. Negative oxidation states can occur as Zintl phases , as either free lead anions, as in Ba 2 Pb, with lead formally being lead(−IV), or in oxygen-sensitive ring-shaped or polyhedral cluster ions such as the trigonal bipyramidal Pb 5 ion, where two lead atoms are lead(−I) and three are lead(0). In such anions, each atom is at
1755-486: A welcome further development of the island's international relationships." Most Manx politicians stand for election as independents rather than as representatives of political parties. Although political parties do exist, their influence is not as strong as in the United Kingdom. There are three political parties in the Isle of Man: There are also a number of pressure groups on the island. Mec Vannin advocate
1872-641: A year. At lower levels it can be around 800 millimetres (31 in) a year. In drier spots, the Isle of Man is sunnier than either Ireland or the majority of England at 1,651 hours per year at the official Ronaldsway station. The highest recorded temperature was 28.9 °C (84.0 °F) in Ronaldsway on 12 July 1983. Due to the moderate surface temperatures of the Irish Sea, the island does not receive bursts of heat that sometimes can hit Northern England. The stable water temperature also means that air frost
1989-590: Is 6 times higher, copper 10 times, and mild steel 15 times higher); it can be strengthened by adding small amounts of copper or antimony . The melting point of lead—at 327.5 °C (621.5 °F) —is very low compared to most metals. Its boiling point of 1749 °C (3180 °F) is the lowest among the carbon-group elements. The electrical resistivity of lead at 20 °C is 192 nanoohm -meters, almost an order of magnitude higher than those of other industrial metals (copper at 15.43 nΩ·m ; gold 20.51 nΩ·m ; and aluminium at 24.15 nΩ·m ). Lead
2106-520: Is a neurotoxin that accumulates in soft tissues and bones. It damages the nervous system and interferes with the function of biological enzymes , causing neurological disorders ranging from behavioral problems to brain damage, and also affects general health, cardiovascular, and renal systems. Lead's toxicity was first documented by ancient Greek and Roman writers, who noted some of the symptoms of lead poisoning , but became widely recognized in Europe in
2223-401: Is a superconductor at temperatures lower than 7.19 K ; this is the highest critical temperature of all type-I superconductors and the third highest of the elemental superconductors. Natural lead consists of four stable isotopes with mass numbers of 204, 206, 207, and 208, and traces of six short-lived radioisotopes with mass numbers 209–214 inclusive. The high number of isotopes
2340-420: Is a common constituent; the sulfate or chloride may also be present in urban or maritime settings. This layer makes bulk lead effectively chemically inert in the air. Finely powdered lead, as with many metals, is pyrophoric , and burns with a bluish-white flame. Fluorine reacts with lead at room temperature, forming lead(II) fluoride . The reaction with chlorine is similar but requires heating, as
2457-520: Is a long history of relations and cultural exchange between the Isle of Man and Ireland . The Isle of Man's historic Manx language and its modern revived variant are closely related to both Scottish Gaelic and the Irish language and, in 1947, Éamon de Valera , the Taoiseach of Ireland, spearheaded efforts to save the dying Manx language. The Isle of Man is not part of the United Kingdom; however,
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#17328021776582574-780: Is a mixed sulfide derived from galena; anglesite , PbSO 4 , is a product of galena oxidation; and cerussite or white lead ore, PbCO 3 , is a decomposition product of galena. Arsenic , tin , antimony , silver , gold , copper , bismuth are common impurities in lead minerals. World lead resources exceed two billion tons. Significant deposits are located in Australia, China, Ireland, Mexico, Peru, Portugal, Russia, United States. Global reserves—resources that are economically feasible to extract—totaled 88 million tons in 2016, of which Australia had 35 million, China 17 million, Russia 6.4 million. Typical background concentrations of lead do not exceed 0.1 μg/m in
2691-561: Is a self-governing British Crown Dependency in the Irish Sea , between Great Britain and Ireland . It is recognised as one of the Celtic nations and is the homeland of the Manx people , a Celtic ethnic group. As head of state , Charles III holds the title Lord of Mann and is represented by a Lieutenant Governor . The government of the United Kingdom is responsible for the Isle of Man's military defence and represents it abroad, but
2808-426: Is a strong oxidizing agent, capable of oxidizing hydrochloric acid to chlorine gas. This is because the expected PbCl 4 that would be produced is unstable and spontaneously decomposes to PbCl 2 and Cl 2 . Analogously to lead monoxide , lead dioxide is capable of forming plumbate anions. Lead disulfide and lead diselenide are only stable at high pressures. Lead tetrafluoride , a yellow crystalline powder,
2925-404: Is a very soft metal with a Mohs hardness of 1.5; it can be scratched with a fingernail. It is quite malleable and somewhat ductile. The bulk modulus of lead—a measure of its ease of compressibility—is 45.8 GPa . In comparison, that of aluminium is 75.2 GPa; copper 137.8 GPa; and mild steel 160–169 GPa. Lead's tensile strength , at 12–17 MPa, is low (that of aluminium
3042-508: Is an island located in the middle of the northern Irish Sea , almost equidistant from England to the east, Northern Ireland to the west and Scotland (closest) to the north, while Wales to the south is almost the distance of the Republic of Ireland to the southwest. It is 52 kilometres (32 mi) long and, at its widest point, 22 kilometres (14 mi) wide. It has an area of around 572 square kilometres (221 sq mi). Besides
3159-665: Is claimed to have been in continuous existence since 979 or earlier, purportedly making it the oldest continuously governing body in the world, though evidence supports a much later date. Tynwald is a bicameral or tricameral legislature, comprising the House of Keys (directly elected by universal suffrage with a voting age of 16 years) and the Legislative Council (consisting of indirectly elected and ex-officio members ). These two bodies also meet together in joint session as Tynwald Court. The executive branch of government
3276-445: Is common for the carbon group. The divalent state is rare for carbon and silicon , minor for germanium, important (but not prevailing) for tin, and is the more important of the two oxidation states for lead. This is attributable to relativistic effects , specifically the inert pair effect , which manifests itself when there is a large difference in electronegativity between lead and oxide , halide , or nitride anions, leading to
3393-408: Is consistent with lead's atomic number being even. Lead has a magic number of protons (82), for which the nuclear shell model accurately predicts an especially stable nucleus. Lead-208 has 126 neutrons, another magic number, which may explain why lead-208 is extraordinarily stable. With its high atomic number, lead is the heaviest element whose natural isotopes are regarded as stable; lead-208
3510-428: Is evidence of workings at Bradda Head dating from ancient times. Ore had been extracted by a method referred to as plug and feather or "feather wedges," which indicates that the workings date from before the introduction of gun powder into Europe. The first recorded mining operation was in 1246, when Norse Kings ruled the Isle of Man , and King Harald II granted a charter to the monks of Furness Abbey . By
3627-414: Is exploited in the synthesis of other lead compounds. Few inorganic lead(IV) compounds are known. They are only formed in highly oxidizing solutions and do not normally exist under standard conditions. Lead(II) oxide gives a mixed oxide on further oxidation, Pb 3 O 4 . It is described as lead(II,IV) oxide , or structurally 2PbO·PbO 2 , and is the best-known mixed valence lead compound. Lead dioxide
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3744-648: Is found in the Sagas of Icelanders as Mön . The name is probably cognate with the Welsh name of the island of Anglesey , Ynys Môn , usually derived from a Celtic word for 'mountain' (reflected in Welsh mynydd , Breton menez and Scottish Gaelic monadh ), from a Proto-Celtic *moniyos . The name was at least secondarily associated with that of Manannán mac Lir in Irish mythology (corresponding to Welsh Manawydan fab Llŷr ). In
3861-502: Is more prevalent than most other elements with atomic numbers greater than 40. Primordial lead—which comprises the isotopes lead-204, lead-206, lead-207, and lead-208—was mostly created as a result of repetitive neutron capture processes occurring in stars. The two main modes of capture are the s- and r-processes . In the s-process (s is for "slow"), captures are separated by years or decades, allowing less stable nuclei to undergo beta decay . A stable thallium-203 nucleus can capture
3978-650: Is not stable, as both the lead(III) ion and the larger complexes containing it are radicals . The same applies for lead(I), which can be found in such radical species. Numerous mixed lead(II,IV) oxides are known. When PbO 2 is heated in air, it becomes Pb 12 O 19 at 293 °C, Pb 12 O 17 at 351 °C, Pb 3 O 4 at 374 °C, and finally PbO at 605 °C. A further sesquioxide , Pb 2 O 3 , can be obtained at high pressure, along with several non-stoichiometric phases. Many of them show defective fluorite structures in which some oxygen atoms are replaced by vacancies: PbO can be considered as having such
4095-741: Is over three and a half times lower than that of the C–C bond . With itself, lead can build metal–metal bonds of an order up to three. With carbon, lead forms organolead compounds similar to, but generally less stable than, typical organic compounds (due to the Pb–C bond being rather weak). This makes the organometallic chemistry of lead far less wide-ranging than that of tin. Lead predominantly forms organolead(IV) compounds, even when starting with inorganic lead(II) reactants; very few organolead(II) compounds are known. The most well-characterized exceptions are Pb[CH(SiMe 3 ) 2 ] 2 and plumbocene . The lead analog of
4212-522: Is rare, averaging just ten occasions per year. On 10 May 2019 Chief Minister Howard Quayle stated that the Isle of Man Government recognises that a state of emergency exists due to the threat of anthropogenic climate change . The United Kingdom is responsible for the island's defence and ultimately for good governance , and for representing the island in international forums, while the island's own parliament and government have competence over all domestic matters. The island's parliament, Tynwald ,
4329-543: Is relatively flat, consisting mainly of deposits from glacial advances from western Scotland during colder times. There are more recently deposited shingle beaches at the northernmost point, the Point of Ayre . The island has one mountain higher than 600 metres (2,000 ft), Snaefell , with a height of 620 metres (2,034 ft). According to an old saying, from the summit one can see six kingdoms: those of Man, Scotland, England, Ireland, Wales and Heaven . Some versions add
4446-555: Is reported that 400 miners were in the employ of the mines and had uncovered a great mass of ore which could be easily extracted. Output continued to increase; 3,753 tons of lead ore yielding 2,725 tons of lead was mined on the Island in 1856 of which Foxdale Mines contributed 2,535 tons generating a profit of £11,200. For the same period profit from the Great Laxey Mine amounted to £1,000. In 1875 11,898 tons of zinc blende
4563-415: Is stable, but less so than the difluoride . Lead tetrachloride (a yellow oil) decomposes at room temperature, lead tetrabromide is less stable still, and the existence of lead tetraiodide is questionable. Some lead compounds exist in formal oxidation states other than +4 or +2. Lead(III) may be obtained, as an intermediate between lead(II) and lead(IV), in larger organolead complexes; this oxidation state
4680-413: Is still energetically favorable. Lead, like carbon, is predominantly tetravalent in such compounds. There is a relatively large difference in the electronegativity of lead(II) at 1.87 and lead(IV) at 2.33. This difference marks the reversal in the trend of increasing stability of the +4 oxidation state going down the carbon group; tin, by comparison, has values of 1.80 in the +2 oxidation state and 1.96 in
4797-669: Is the Council of Ministers , which is composed of Members of Tynwald (usually Members of the House of Keys, though Members of the Legislative Council may also be appointed as Ministers). It is headed by the Chief Minister . Vice-regal functions of the head of state are performed by a lieutenant governor . In various laws of the United Kingdom, "the United Kingdom" is defined to exclude the Isle of Man. Historically,
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4914-448: Is the heaviest stable nucleus. (This distinction formerly fell to bismuth , with an atomic number of 83, until its only primordial isotope , bismuth-209, was found in 2003 to decay very slowly.) The four stable isotopes of lead could theoretically undergo alpha decay to isotopes of mercury with a release of energy, but this has not been observed for any of them; their predicted half-lives range from 10 to 10 years (at least 10 times
5031-538: Is the origin of the English word " plumbing ". Its ease of working, its low melting point enabling the easy fabrication of completely waterproof welded joints, and its resistance to corrosion ensured its widespread use in other applications, including pharmaceuticals, roofing, currency, warfare. Writers of the time, such as Cato the Elder , Columella , and Pliny the Elder , recommended lead (and lead-coated) vessels for
5148-525: Is the so-called inert pair effect : the 6s electrons of lead become reluctant to participate in bonding, stabilising the +2 oxidation state and making the distance between nearest atoms in crystalline lead unusually long. Lead's lighter carbon group congeners form stable or metastable allotropes with the tetrahedrally coordinated and covalently bonded diamond cubic structure. The energy levels of their outer s- and p-orbitals are close enough to allow mixing into four hybrid sp orbitals. In lead,
5265-446: Is usefully exploited: lead tetraacetate is an important laboratory reagent for oxidation in organic synthesis. Tetraethyllead, once added to automotive gasoline, was produced in larger quantities than any other organometallic compound, and is still widely used in fuel for small aircraft . Other organolead compounds are less chemically stable. For many organic compounds, a lead analog does not exist. Lead's per-particle abundance in
5382-580: The Anglo-Saxon King Edwin of Northumbria , who then launched raids from Man into Ireland . How much influence the Northumbrians exerted on Man is unknown, but very few place names on Man are of Old English origin. Vikings arrived at the end of the 8th century. They established Tynwald and introduced many land divisions that still exist. In 1266 King Magnus VI of Norway ceded the islands to Alexander III, King of Scots , in
5499-535: The Commonwealth Games . The Government of the Isle of Man has made calls for a more integrated relationship with the Commonwealth, including more direct representation and enhanced participation in Commonwealth organisations and meetings, including Commonwealth Heads of Government Meetings. The Chief Minister of the Isle of Man has said: "A closer connection with the Commonwealth itself would be
5616-700: The French Revolutionary Wars and Napoleonic Wars . The 1st Battalion (of 3 companies) was raised in 1793. A 2nd Battalion (of 10 companies) was raised in 1795, and it saw action during the Irish Rebellion of 1798 . The regiment was disbanded in 1802. A third body of Manx Fencibles was raised in 1803 to defend the island during the Napoleonic Wars and to assist the Revenue. It was disbanded in 1811. The Isle of Man Home Guard
5733-688: The Legislative Council was appointed by the Crown. Since then, democratic government has been gradually extended. During both World Wars, the island was used for the internment of people originating from enemy countries. In recent times, the economy of the island has benefited from regulatory arbitrage in various contexts, such as low taxes. These have attracted wealthy individuals and, together with relatively low government interference, industries such as offshore financial services and more recently gambling. The Isle of Man has designated more than 250 historic sites as registered buildings . The Isle of Man
5850-706: The Lieutenant Governor of the Isle of Man , who is formally responsible for issuing Isle of Man–issued British passports, titled " British passport – Isle of Man " . The powers conferred on the UK Secretary of State by the British Nationality Act 1981 extend to and are exercised in the Isle of Man by the Lieutenant Governor. Isle of Man-issued British passports can presently be issued to any British citizen resident in
5967-630: The Phoenicians worked deposits in the Iberian peninsula ; by 1600 BC, lead mining existed in Cyprus , Greece , and Sardinia . Rome's territorial expansion in Europe and across the Mediterranean, and its development of mining, led to it becoming the greatest producer of lead during the classical era , with an estimated annual output peaking at 80,000 tonnes. Like their predecessors,
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#17328021776586084-671: The Solar System is 0.121 ppb (parts per billion). This figure is two and a half times higher than that of platinum , eight times more than mercury , and seventeen times more than gold . The amount of lead in the universe is slowly increasing as most heavier atoms (all of which are unstable) gradually decay to lead. The abundance of lead in the Solar System since its formation 4.5 billion years ago has increased by about 0.75%. The solar system abundances table shows that lead, despite its relatively high atomic number,
6201-607: The Treaty of Perth . But Scottish rule over Man did not become firmly established until 1275, when the Manx were defeated in the Battle of Ronaldsway , near Castletown . In 1290 King Edward I of England sent Walter de Huntercombe to take possession of Man. It remained in English hands until 1313, when Robert the Bruce took it after besieging Castle Rushen for five weeks. In 1314, it
6318-778: The University College Isle of Man function under the department. Two-thirds of residents of Man are overweight or obese, four in ten are physically inactive, one-quarter are binge drinkers, one in twelve smoke cigarettes and about 15% are in poor general health. Healthcare is provided via a public health scheme by the Department of Health and Social Care for residents and visitors from the UK. The Crime Severity Rate in Man, which largely measures crimes directed against persons or property, remains substantially less than that in
6435-804: The fall of Rome and did not reach comparable levels until the Industrial Revolution . Lead played a crucial role in the development of the printing press , as movable type could be relatively easily cast from lead alloys. In 2014, the annual global production of lead was about ten million tonnes, over half of which was from recycling. Lead's high density, low melting point, ductility and relative inertness to oxidation make it useful. These properties, combined with its relative abundance and low cost, resulted in its extensive use in construction , plumbing , batteries , bullets , shots , weights , solders , pewters , fusible alloys , lead paints , leaded gasoline , and radiation shielding . Lead
6552-558: The genitive case as Vannin ( IPA: [vanɪnʲ] ), with initial consonant mutation , hence Ellan Vannin , "Island of Mann". The short form used in English is spelled either Mann or Man. The earliest recorded Manx form of the name is Manu or Mana . The Old Irish form of the name is Manau or Mano . Old Welsh records named it as Manaw , also reflected in Manaw Gododdin ,
6669-401: The nucleus , and more shielded by smaller orbitals. The sum of the first four ionization energies of lead exceeds that of tin, contrary to what periodic trends would predict. This is explained by relativistic effects , which become significant in heavier atoms, which contract s and p orbitals such that lead's 6s electrons have larger binding energies than its 5s electrons. A consequence
6786-624: The +2 oxidation state rather than the +4 state common with lighter members of the carbon group . Exceptions are mostly limited to organolead compounds . Like the lighter members of the group, lead tends to bond with itself ; it can form chains and polyhedral structures. Since lead is easily extracted from its ores , prehistoric people in the Near East were aware of it . Galena is a principal ore of lead which often bears silver. Interest in silver helped initiate widespread extraction and use of lead in ancient Rome . Lead production declined after
6903-468: The +4 state. Lead(II) compounds are characteristic of the inorganic chemistry of lead. Even strong oxidizing agents like fluorine and chlorine react with lead to give only PbF 2 and PbCl 2 . Lead(II) ions are usually colorless in solution, and partially hydrolyze to form Pb(OH) and finally [Pb 4 (OH) 4 ] (in which the hydroxyl ions act as bridging ligands ), but are not reducing agents as tin(II) ions are. Techniques for identifying
7020-457: The 9th century, Norsemen established the thalassocratic Kingdom of the Isles , which included the Isle of Man. Magnus III , King of Norway from 1093 to 1103, reigned as King of Man and the Isles between 1099 and 1103. In 1266, King Magnus VI of Norway sold his suzerainty over Mann to King Alexander III of Scotland under the Treaty of Perth . After a period of alternating rule by
7137-626: The Egyptians had used lead for sinkers in fishing nets , glazes , glasses , enamels , ornaments . Various civilizations of the Fertile Crescent used lead as a writing material , as coins , and as a construction material . Lead was used by the ancient Chinese as a stimulant , as currency , as contraceptive , and in chopsticks . The Indus Valley civilization and the Mesoamericans used it for making amulets ; and
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#17328021776587254-531: The Isle of Man Parliament , Tynwald , became the first national legislative body in the world to give women the right to vote in a general election, although this excluded married women. The Manx economy is bolstered by its status as a tax haven and offshore banking destination. Insurance and online gambling each generate 17% of the GNP , followed by information and communications technology and banking with 9% each. This status has, however, also brought
7371-535: The Isle of Man and to British citizens who have a qualifying close personal connection to the Isle of Man but are now resident either in the UK or in either one of the two other Crown Dependencies. The Isle of Man was never part of either the EEC or the European Union (EU), nor did it have a special status , and thus it did not take part in the 2016 (Brexit) referendum on the UK's EU membership. However, it
7488-487: The Isle of Man still has a separate international identity. Humans have lived on the island since before 6500 BC. Gaelic cultural influence began in the 5th century AD, when Irish missionaries following the teaching of St. Patrick began settling the island, and the Manx language , a branch of the Goidelic languages , emerged. In 627, King Edwin of Northumbria conquered the Isle of Man along with most of Mercia . In
7605-699: The Kings of Scotland and England , the island came under the feudal lordship of the English Crown in 1399. The lordship revested in the British Crown in 1765, but the island did not become part of the 18th-century Kingdom of Great Britain , nor of its successors, the United Kingdom of Great Britain and Ireland and the present-day United Kingdom of Great Britain and Northern Ireland . It has always retained its internal self-government. In 1881,
7722-475: The Romans obtained lead mostly as a by-product of silver smelting. Lead mining occurred in central Europe , Britain , Balkans , Greece , Anatolia , Hispania , the latter accounting for 40% of world production. Lead tablets were commonly used as a material for letters. Lead coffins, cast in flat sand forms and with interchangeable motifs to suit the faith of the deceased, were used in ancient Judea . Lead
7839-406: The UK has taken care of its external and defence affairs and retains paramount power to legislate for the Island. However, in 2007, the Isle of Man and the UK signed an agreement that established frameworks for the development of the international identity of the Isle of Man. There is no separate Manx citizenship. Citizenship is covered by UK law, and Manx people are classed as British citizens. There
7956-680: The UK is responsible for its defence and external affairs. There are no independent military forces on the Isle of Man, although HMS Ramsey was affiliated with the town of the same name . From 1938 to 1955, there existed the Manx Regiment of the British Territorial Army (TA), which saw extensive action during the Second World War . During the English Civil War , the 7th Earl of Derby , who
8073-414: The United Kingdom, although the rate of violent crime has been increasing in recent years. Most violent crime is associated with the trade in illegal drugs. Lead ore Lead (pronounced "led") is a chemical element ; it has symbol Pb (from Latin plumbum ) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable , and also has
8190-607: The atmosphere; 100 mg/kg in soil; 4 mg/kg in vegetation, 5 μg/L in fresh water and seawater. The modern English word lead is of Germanic origin; it comes from the Middle English leed and Old English lēad (with the macron above the "e" signifying that the vowel sound of that letter is long). The Old English word is derived from the hypothetical reconstructed Proto-Germanic * lauda- ('lead'). According to linguistic theory, this word bore descendants in multiple Germanic languages of exactly
8307-657: The beginning of farming, and the people began to build megalithic monuments , such as Cashtal yn Ard in Maughold parish , King Orry's Grave in Laxey , Mull Hill near Cregneash and Ballaharra Stones at St John's . There were also the local Ronaldsway and Bann cultures . During the Bronze Age , the size of burial mounds decreased. The people put bodies into stone-lined graves with ornamental containers. The Bronze Age burial mounds survived as long-lasting markers around
8424-523: The countryside. The ancient Romans knew of the island and called it Insula Manavia . During the four centuries when Rome ruled the Province of Britannia , the Roman military controlled the Irish Sea, providing safe passage of agricultural goods from the productive farms of Anglesey to Roman settlements at the English – Scottish frontier. Only a few Roman artefacts have been found on Man, suggesting
8541-489: The course of the Earth's history, have remained in the crust instead of sinking deeper into the Earth's interior. This accounts for lead's relatively high crustal abundance of 14 ppm; it is the 36th most abundant element in the crust. The main lead-bearing mineral is galena (PbS), which is mostly found with zinc ores. Most other lead minerals are related to galena in some way; boulangerite , Pb 5 Sb 4 S 11 ,
8658-419: The current age of the universe). Three of the stable isotopes are found in three of the four major decay chains : lead-206, lead-207, and lead-208 are the final decay products of uranium-238 , uranium-235 , and thorium-232 , respectively. These decay chains are called the uranium chain , the actinium chain , and the thorium chain . Their isotopic concentrations in a natural rock sample depends greatly on
8775-428: The diiodide . Many lead(II) pseudohalides are known, such as the cyanide, cyanate, and thiocyanate . Lead(II) forms an extensive variety of halide coordination complexes , such as [PbCl 4 ] , [PbCl 6 ] , and the [Pb 2 Cl 9 ] n chain anion. Lead(II) sulfate is insoluble in water, like the sulfates of other heavy divalent cations . Lead(II) nitrate and lead(II) acetate are very soluble, and this
8892-403: The earliest Irish mythological texts, Manannán is a king of the otherworld , but the 9th-century Sanas Cormaic identifies a euhemerised Manannán as "a famous merchant who resided in, and gave name to, the Isle of Man". (Though others suggest it was the Isle that lent its name to the merchant, refer exhibit in "House of Manannan", of Isle of Man Museum, Peel.) Later, a Manannán is recorded as
9009-404: The early 20th century it had become cheaper to import ore from Spain and Australia than to mine it at considerable depths. The Beckwith Shaft which was sunk in 1849 had by the time of closure yielded 50,000 tons of lead ore with a value of £750,000 and had been worked to a depth of 230 fathoms equating to 1,380 ft (420.6 m). Extraction from such depths, with the infrastructure required,
9126-525: The eastern and southern Africans used lead in wire drawing . Because silver was extensively used as a decorative material and an exchange medium, lead deposits came to be worked in Asia Minor from 3000 BC; later, lead deposits were developed in the Aegean and Laurion . These three regions collectively dominated production of mined lead until c. 1200 BC . Beginning c. 2000 BC,
9243-578: The element its chemical symbol Pb . The word * ɸloud-io- is thought to be the origin of Proto-Germanic * bliwa- (which also means 'lead'), from which stemmed the German Blei . The name of the chemical element is not related to the verb of the same spelling, which is derived from Proto-Germanic * laidijan- ('to lead'). Metallic lead beads dating back to 7000–6500 BC have been found in Asia Minor and may represent
9360-612: The end of the implementation period, the Isle of Man's relationship with the EU would depend on the agreement reached between the UK and the EU on their future relationship. The Isle of Man is not a member of the Commonwealth of Nations . By virtue of its relationship with the United Kingdom, it takes part in several Commonwealth institutions, including the Commonwealth Parliamentary Association and
9477-460: The establishment of a sovereign republic . The Positive Action Group campaign for three key elements to be introduced into the governance of the island: open accountable government, rigorous control of public finances and a fairer society. Local government on the Isle of Man is based partly on the island's 17 ancient parishes. There are four types of local authorities: Each of these districts has its own body of commissioners. The Isle of Man
9594-466: The first king of Man in a Manx poem (dated 1504). The island was cut off from the surrounding islands around 8000 BC as sea levels rose following the end of the last ice age. Humans colonised it by travelling by sea some time before 6500 BC . The first occupants were hunter-gatherers and fishermen. Examples of their tools are kept at the Manx Museum . The Neolithic Period marked
9711-413: The first example of metal smelting . At that time, lead had few (if any) applications due to its softness and dull appearance. The major reason for the spread of lead production was its association with silver, which may be obtained by burning galena (a common lead mineral). The Ancient Egyptians were the first to use lead minerals in cosmetics, an application that spread to Ancient Greece and beyond;
9828-625: The government of the island in all respects and had control over its finances but was subject to the approval of the Lord of Mann. In 1765, the Act of Revestment occurred, whereby the feudal rights of the Dukes of Atholl as Lords of Man were purchased and revested into the British Crown. In 1866, the Isle of Man obtained limited home rule, with partly democratic elections to the House of Keys , but
9945-430: The group. Lead dihalides are well-characterized; this includes the diastatide and mixed halides, such as PbFCl. The relative insolubility of the latter forms a useful basis for the gravimetric determination of fluorine. The difluoride was the first solid ionically conducting compound to be discovered (in 1834, by Michael Faraday ). The other dihalides decompose on exposure to ultraviolet or visible light, especially
10062-449: The inert pair effect increases the separation between its s- and p-orbitals, and the gap cannot be overcome by the energy that would be released by extra bonds following hybridization. Rather than having a diamond cubic structure, lead forms metallic bonds in which only the p-electrons are delocalized and shared between the Pb ions. Lead consequently has a face-centered cubic structure like
10179-437: The island of Man itself, the political unit of the Isle of Man includes some nearby small islands: the seasonally inhabited Calf of Man , Chicken Rock (on which stands an unstaffed lighthouse), St Patrick's Isle and St Michael's Isle . The last two of these are connected to the main island by permanent roads/causeways. Ranges of hills in the north and south are separated by a central valley. The northern plain, by contrast,
10296-447: The late 19th century AD. A lead atom has 82 electrons , arranged in an electron configuration of [ Xe ]4f 5d 6s 6p . The sum of lead's first and second ionization energies —the total energy required to remove the two 6p electrons—is close to that of tin , lead's upper neighbor in the carbon group . This is unusual; ionization energies generally fall going down a group, as an element's outer electrons become more distant from
10413-560: The latter being stable only above around 488 °C. Litharge is the most commonly used inorganic compound of lead. There is no lead(II) hydroxide; increasing the pH of solutions of lead(II) salts leads to hydrolysis and condensation. Lead commonly reacts with heavier chalcogens. Lead sulfide is a semiconductor , a photoconductor , and an extremely sensitive infrared radiation detector . The other two chalcogenides, lead selenide and lead telluride , are likewise photoconducting. They are unusual in that their color becomes lighter going down
10530-441: The latter is not; this allows for lead–lead dating . As uranium decays into lead, their relative amounts change; this is the basis for uranium–lead dating . Lead-207 exhibits nuclear magnetic resonance , a property that has been used to study its compounds in solution and solid state, including in the human body. Apart from the stable isotopes, which make up almost all lead that exists naturally, there are trace quantities of
10647-469: The mid-19th century, the Isle of Man was one of the leading lead producing districts in Britain and more zinc was produced from the Island's mines than all the other mines in Britain combined. Workings in the area of Foxdale date from 1724 when Lord Derby granted permission for the extraction of ore to begin. Initial results were somewhat mixed but work continued spasmodically until in 1848 when it
10764-475: The mines began to decline significantly and by 1910 the sale of ore was failing to cover the expenses of coal, labour and other sundries. The situation had become so dire that the directors of the Isle of Man Mining Company decided on stopping the operation unless the men agreed to a reduction in wages. Despite the men accepting reduced terms and conditions, yield continued to dramatically reduce, and in April 1911
10881-483: The name for an ancient district in north Britain along the lower Firth of Forth . In the 1st century AD, Pliny the Elder records it as Monapia or Monabia , and Ptolemy (2nd century) as Monœda ( Mοναοιδα , Monaoida ) or Mοναρινα ( Monarina ), in Koine Greek . Later Latin references have Mevania or Mænavia ( Orosius , 416), and Eubonia or Eumonia by Irish writers. It
10998-539: The neutrons are arranged in complete shells in the atomic nucleus, and it becomes harder to energetically accommodate more of them. When the neutron flux subsides, these nuclei beta decay into stable isotopes of osmium , iridium , platinum . Lead is classified as a chalcophile under the Goldschmidt classification , meaning it is generally found combined with sulfur. It rarely occurs in its native , metallic form. Many lead minerals are relatively light and, over
11115-418: The preparation of sweeteners and preservatives added to wine and food. The lead conferred an agreeable taste due to the formation of "sugar of lead" ( lead(II) acetate ), whereas copper vessels imparted a bitter flavor through verdigris formation. This metal was by far the most used material in classical antiquity, and it is appropriate to refer to the (Roman) Lead Age. Lead was to the Romans what plastic
11232-414: The presence of the Pb ion in water generally rely on the precipitation of lead(II) chloride using dilute hydrochloric acid. As the chloride salt is sparingly soluble in water, in very dilute solutions the precipitation of lead(II) sulfide is instead achieved by bubbling hydrogen sulfide through the solution. Lead monoxide exists in two polymorphs , litharge α-PbO (red) and massicot β-PbO (yellow),
11349-422: The presence of these three parent uranium and thorium isotopes. For example, the relative abundance of lead-208 can range from 52% in normal samples to 90% in thorium ores; for this reason, the standard atomic weight of lead is given to only one decimal place. As time passes, the ratio of lead-206 and lead-207 to lead-204 increases, since the former two are supplemented by radioactive decay of heavier elements while
11466-538: The problems of money laundering , financial crime and terrorism financing. The Isle of Man is also known for the TT Motorcycle Races, and the Manx cat , a breed with short or no tails. In 2016, UNESCO awarded the Isle of Man biosphere reserve status . The Manx name of the Isle of Man is Ellan Vannin : ellan ( Manx pronunciation: [ɛlʲan] ), a Manx word meaning "island"; Mannin ( IPA: [manɪnʲ] ) appears in
11583-432: The r-process (r is for "rapid"), captures happen faster than nuclei can decay. This occurs in environments with a high neutron density, such as a supernova or the merger of two neutron stars . The neutron flux involved may be on the order of 10 neutrons per square centimeter per second. The r-process does not form as much lead as the s-process. It tends to stop once neutron-rich nuclei reach 126 neutrons. At this point,
11700-541: The resulting chloride layer diminishes the reactivity of the elements. Molten lead reacts with the chalcogens to give lead(II) chalcogenides. Lead metal resists sulfuric and phosphoric acid but not hydrochloric or nitric acid ; the outcome depends on insolubility and subsequent passivation of the product salt. Organic acids, such as acetic acid , dissolve lead in the presence of oxygen. Concentrated alkalis dissolve lead and form plumbites . Lead shows two main oxidation states: +4 and +2. The tetravalent state
11817-595: The same circumstances and restrictions as any other non-EU European relating country to work in the EU. The political and diplomatic impacts of Brexit on the island are still uncertain. The UK confirmed that the Crown Dependencies' positions were included in the Brexit negotiations . The Brexit withdrawal agreement explicitly included the Isle of Man in its territorial scope, but makes no other mention of it. The island's government website stated that after
11934-518: The same meaning. There is no consensus on the origin of the Proto-Germanic * lauda- . One hypothesis suggests it is derived from Proto-Indo-European * lAudh- ('lead'; capitalization of the vowel is equivalent to the macron). Another hypothesis suggests it is borrowed from Proto-Celtic * ɸloud-io- ('lead'). This word is related to the Latin plumbum , which gave
12051-491: The similarly sized divalent metals calcium and strontium . Pure lead has a bright, shiny gray appearance with a hint of blue. It tarnishes on contact with moist air and takes on a dull appearance, the hue of which depends on the prevailing conditions. Characteristic properties of lead include high density , malleability, ductility, and high resistance to corrosion due to passivation . Lead's close-packed face-centered cubic structure and high atomic weight result in
12168-588: The simplest organic compound , methane , is plumbane . Plumbane may be obtained in a reaction between metallic lead and atomic hydrogen. Two simple derivatives, tetramethyllead and tetraethyllead , are the best-known organolead compounds. These compounds are relatively stable: tetraethyllead only starts to decompose if heated or if exposed to sunlight or ultraviolet light. With sodium metal, lead readily forms an equimolar alloy that reacts with alkyl halides to form organometallic compounds such as tetraethyllead. The oxidizing nature of many organolead compounds
12285-403: The very rare cluster decay of radium-223, one of the daughter products of natural uranium-235, and the decay chain of neptunium-237, traces of which are produced by neutron capture in uranium ores. Lead-213 also occurs in the decay chain of neptunium-237. Lead-210 is particularly useful for helping to identify the ages of samples by measuring its ratio to lead-206 (both isotopes are present in
12402-656: Was also the Lord of Mann, conscripted 10 men from each parish (170 in total) to fight for the Royalist cause; the majority were killed at the Battle of Wigan Lane in 1651. In 1779, the Manx Fencible Corps , a fencible regiment of three companies, was raised; it was disbanded in 1783 at the end of the American War of Independence . Later, the Royal Manx Fencibles was raised at the time of
12519-536: Was an initial success with the result that a Canadian mining company, Amanda Mines Ltd, proposed a merger with Metalliferous Holdings Ltd. An audit had found that approximately 400,000 tons of lead-zinc spoil was situated at the former pit heads at Laxey and Foxdale . At the end of May 1956 Amanda Mines took over Metalliferous Holdings Ltd with Metalliferous Holdings becoming a subsidiary of Amanda Mines. The operation yielded £60,000 in 1956. Production ceased in July 1958 as
12636-545: Was extracted, in 1877 186,019 ounces of silver. In 1891 the produce of the Foxdale Mines amounted to £45,200. By 1892 several Lodes were being worked. These extended for approximately 2–3 miles, one yielding a substantial deposit of silver and another a sizable amount of very rich lead ore . Near these mines, known as the New Foxdale Mines, several shafts were sunk by prospectors, but while some lead
12753-625: Was found it soon petered out, and they were abandoned. There was also a group of mines in the valley known as the Old Foxdale Mines. These contained the Flappy Vein and were worked until 1888. Also situated nearby was the Louisa Mine, however this was only worked for a short period of time before it was found to be uneconomical. A shaft was also sunk at East Foxdale which returned a substantial yield up until 1889 by which time it
12870-514: Was included within the EU's customs area , as part of Protocol 3 of the UK's Act of Accession to the Treaty of Rome , allowing Manx goods to be traded throughout the EU without tariffs. It was not part of the EU's internal market and there were still limitations on the movement of capital, services and labour. EU citizens were entitled to travel and reside, but not work, in the island without restriction. British citizens with Manxman status were under
12987-416: Was not economically viable. Although none of the mine workings were re-opened, in 1955 it was thought that re-processing the spoil from the mines could extract a further yield of ore. A company, Metalliferous Holdings Ltd, had been formed and was already in the process of undertaking such work at the old Snaefell Mine . The new company employed 22 men in the undertaking working around the clock. Spoil residue
13104-572: Was raised during the Second World War for home defence. In 2015 a multi-capability recruiting and training unit of the British Army Reserve was established in Douglas. There is no citizenship of the Isle of Man as such; Isle of Man residents are entitled to British citizenship and can obtain a full UK British passport or British Isle of Man passport. The Passport Office, Isle of Man, Douglas, accepts and processes applications for
13221-504: Was retaken for the English by John Bacach of Argyll. In 1317, it was retaken for the Scots by Thomas Randolph, 1st Earl of Moray and Lord of the Isle of Man. It was held by the Scots until 1333. For some years thereafter control passed back and forth between the two kingdoms until the English took it for the final time in 1346. The English Crown delegated its rule of the island to a series of lords and magnates. Tynwald passed laws concerning
13338-598: Was the last place in the British Isles to legalise same-sex sexual activity. While it had been legal in England and Wales since 1967, it remained illegal in the Isle of Man until 1992. The Isle of Man's former Chief Minister Howard Quayle issued an "unqualified apology" to gay men convicted of same-sex offences under previous Manx laws. Public education is overseen by the Department of Education, Sport & Culture. Thirty-two primary schools, five secondary schools and
13455-480: Was transported from Foxdale to the company's flotation plant where it was tipped into an automatic sieve and in turn fed into an 80-ton Ball mill which the company had sourced from the Gold Coast . The process saw the spoil crushed by steel balls and chemicals and then passed on to the flotation tanks where it was conditioned by more chemicals, automatically skimmed, and finally dried off into powder. The venture
13572-534: Was used to make sling bullets from the 5th century BC. In Roman times, lead sling bullets were amply used, and were effective at a distance of between 100 and 150 meters. The Balearic slingers , used as mercenaries in Carthaginian and Roman armies, were famous for their shooting distance and accuracy. Lead was used for making water pipes in the Roman Empire ; the Latin word for the metal, plumbum ,
13689-411: Was worked out. The mines continued to achieve a profit throughout the remainder of the 19th century, although the amount declined in part due to a stagnation in the price of ore. In 1900 the ore risings for the year amounted to 3,610 tons yielding a profit of £10,800 an increase of £2,000 on the 1899 operation and producing a dividend of 7.5%. During the first decade of the 20th century the yield from
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