Because of technological limitations associated to this method of processing, nowadays the biggest CBD PbSe detector format commercialized is a linear array of 1x256 elements. It does not require cooling, but performs better at lower temperatures. [254], In a child's developing brain, lead interferes with synapse formation in the cerebral cortex, neurochemical development (including that of neurotransmitters), and the organization of ion channels. [117] Britain was the leading producer, losing this status by the mid-19th century with the depletion of its mines and the development of lead mining in Germany, Spain, and the United States. [3] It is a grey crystalline solid material. Carbon (as coke or coal gas[p]) is added to the molten charge along with fluxing agents. Anonymous. The United Kingdom introduced mandatory factory inspections in 1878 and appointed the first Medical Inspector of Factories in 1898; as a result, a 25-fold decrease in lead poisoning incidents from 1900 to 1944 was reported. [240] A 2009 Canadian–American study concluded that even at levels that are considered to pose little to no risk, lead may cause "adverse mental health outcomes". The sum of all elements per 10. Provied information about LEAD SELENIDE(Molecular Formula: PbSe, CAS Registry Number:12069-00-0 ) ,Boiling Point,Melting Point,Flash Point,Density,NMR Specturm,Molecular Structure,Risk Codes,Synthesis Route at guidechem [95] The solar system abundances table shows that lead, despite its relatively high atomic number, is more prevalent than most other elements with atomic numbers greater than 40. It is yellow to red in appearance with a melting point of >1,100°C, a density of 5.42 g/cc, and a vapor pressure of 10-4 Torr at 660°C. [80], Negative oxidation states can occur as Zintl phases, as either free lead anions, as in Ba2Pb, with lead formally being lead(−IV),[81] or in oxygen-sensitive ring-shaped or polyhedral cluster ions such as the trigonal bipyramidal Pb52− ion, where two lead atoms are lead(−I) and three are lead(0). [114] Another hypothesis suggests it is borrowed from Proto-Celtic *ɸloud-io- ("lead"). [223] These batteries have lower energy density and charge-discharge efficiency than lithium-ion batteries, but are significantly cheaper. Chemical Formula of Binary Ionic Compounds ... 22 lead(II) oxide PbO 47 lithium fluoride LiF 23 barium chloride BaCl 2 48 lithium iodide LiI 24 copper chloride CuCl 2 49 lithium hydride LiH 25 barium phosphide Ba 3 P 2 50 potassium oxide K 2 O “Aluminum” and “cesium” are commonly used alternative spellings for "aluminium" and "caesium that are used in the US. 1 0. Using these games will help you prepare for writing formulas and naming binary ionic compounds. Some primary production plants now supplement their operations with scrap lead, and this trend is likely to increase in the future. The energy storage/release reaction used in these devices involves lead sulfate and lead dioxide: Other applications of lead compounds are very specialized and often fading. Formula. [280], Analytical methods for the determination of lead in the environment include spectrophotometry, X-ray fluorescence, atomic spectroscopy and electrochemical methods. [226] Lead is one of three metals used in the Oddy test for museum materials, helping detect organic acids, aldehydes, and acidic gases.[227][228]. Solubility Product Constants near 25 °C. [117], Lead tablets were commonly used as a material for letters. For other uses, see, Isotopic abundances vary greatly by sample. a direct source is chewing on old painted window sills. [86], The lead analog of the simplest organic compound, methane, is plumbane. 250-448-8: Beilstein/Reaxys No. In Roman times, lead sling bullets were amply used, and were effective at a distance of between 100 and 150 meters. This activity includes every compound formula and name that can be formed from the list 44 Ions provided in Chemistry A at Pickerington High School Central. [204] It is used in scuba diving weight belts to counteract the diver's buoyancy. [181] As was the case during European industrialization, lead has had a negative effect on health in China. This accounts for lead's relatively high crustal abundance of 14 ppm; it is the 38th most abundant element in the crust. Chemical bath disposition (CBD) is the standard manufacturing method. [188], If the input is rich in lead, as much as 80% of the original lead can be obtained as bullion; the remaining 20% forms a slag rich in lead monoxide. Even though it has been extensively studied, today the mechanisms responsible of its high detectivity at room temperature are not well understood. It has a greater affinity for lead than calcium, with the result that lead chelate is formed by exchange and excreted in the urine, leaving behind harmless calcium. [94] The abundance of lead in the Solar System since its formation 4.5 billion years ago has increased by about 0.75%. [188] Metallic lead is further obtained from the high-lead (25–40%) slags via submerged fuel combustion or injection, reduction assisted by an electric furnace, or a combination of both. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British … The word *ɸloud-io- is thought to be the origin of Proto-Germanic *bliwa- (which also means "lead"), from which stemmed the German Blei. [116], Metallic lead beads dating back to 7000–6500 BCE have been found in Asia Minor and may represent the first example of metal smelting. Except where otherwise noted, data are given for materials in … These are among the most potent sources of lead contamination along with lead production sites. As 3− Arsenide. Rev. Name. [119] The Ancient Egyptians were the first to use lead minerals in cosmetics, an application that spread to Ancient Greece and beyond;[120] the Egyptians may have used lead for sinkers in fishing nets, glazes, glasses, enamels, and for ornaments. [261] Fruit and vegetables can be contaminated by high levels of lead in the soils they were grown in. It is used as ballast in sailboat keels; its density allows it to take up a small volume and minimize water resistance, thus counterbalancing the heeling effect of wind on the sails. Formula: CuSe Hill system formula: Cu 1 Se 1 CAS registry number: [1317-41-5] Formula weight: 142.506 Class: selenide Colour: blue-black Appearance: crystalline solid Melting point: 550°C (decomposes) Boiling point: Density: 6000 kg m-3 [178], From 1960 to 1990, lead output in the Western Bloc grew by about 31%. [293] Lead is released to the wildlife in shooting places and a number of lead management practices, such as stewardship of the environment and reduced public scrutiny, have been developed to counter the lead contamination. Pb3P2 (Plumbous Phosphide) 5. [11], As a sensitive material to the infrared radiation, PbSe has unique and outstanding characteristics: it can detect IR radiation of wavelengths from 1.5 to 5.2 μm (mid-wave infrared window, abbreviated MWIR – in some special conditions it is possible to extend its response beyond 6 μm), it has a high detectivity at room temperature (uncooled performance), and due to its quantum nature, it also presents a very fast response, which makes this material an excellent candidate as detector of low cost high speed infrared imagers.[12]. NH 4 + Ammonium. This new processing method has been recently developed in Spain. The melt is treated in a reverberatory furnace with air, steam, and sulfur, which oxidizes the impurities except for silver, gold, and bismuth. It is an acid. Its chemical formula is H 2 Se. PbO2, and is the best-known mixed valence lead compound. [187] During initial processing, ores typically undergo crushing, dense-medium separation, grinding, froth flotation, and drying. [193], Alternatively to the pyrometallurgical processes, very pure lead can be obtained by processing smelted lead electrolytically using the Betts process. [90] The oxidizing nature of many organolead compounds is usefully exploited: lead tetraacetate is an important laboratory reagent for oxidation in organic synthesis. DTXSID6066606. Dicopper selenide. For example, a firm "...producing quality [lead] garden ornament from our studio in West London for over a century". Lead tetrafluoride, a yellow crystalline powder, is stable, but less so than the difluoride. Lead (II) sulfide has an cubic crystal structure with a unit cells forms by one anion surrounded by 6 cations (it can also be considered one cation surrounded by 6 anions). Source(s): 0 0. [96], In the s-process (s is for "slow"), captures are separated by years or decades, allowing less stable nuclei to undergo beta decay. In addition to being the main application for lead metal, lead-acid batteries are also the main consumer of lead compounds. [212], Lead's high density, atomic number, and formability form the basis for use of lead as a barrier that absorbs sound, vibration, and radiation. The top three producers of mined lead concentrate in that year were China, Australia, and the United States. It forms cubic crystals of the NaCl structure; it has a direct bandgap of 0.27 eV at room temperature. Molar Mass: 365.12. :: Chemistry Applications:: Chemical Elements, Periodic Table. [290] Lead abatement programs have been mandated by some authorities in properties where young children live. ", "Solar System abundances and condensation temperatures of the elements", "A case report of lead paint poisoning during renovation of a Victorian farmhouse", "The End of Lead? [Se-2] InchI Identifier : InChI=1S/2Cs.Se/q2*+1;-2: InchI Key: KUBAIENASCDSDJ … Structure, properties, spectra, suppliers and links for: Potassium selenide, 1312-74-9. Germanium selenide (GeSe) and SnSe crystallize in a similar layered structure but the fundamental bandgap is direct in single layer and double layer GeSe, whereas indirect in SnSe with few‐layers. [170] A great share of the demand for lead came from plumbing and painting—lead paints were in regular use. 22 Dimensions of these materials affect their electronic structure and physical properties. Room temperature. [202], Lead has been used for bullets since their invention in the Middle Ages. Use the Common Ion Table to find the formula and charge for the sulfate ion. Element % In: 59.25: Se: 40.75: Isotope pattern for InSe. lead(IV) carbonate . It is a compound that is brown in color and it is a crystalline solid. [58] This makes the organometallic chemistry of lead far less wide-ranging than that of tin. On its own or mixed with cadmium sulfide, it is widely… Identifiers CAS Number. Lead was to the Romans what plastic is to us. [260] Seawater products can contain lead if affected by nearby industrial waters. [109], World lead resources exceed two billion tons. The peak sensitivity depends on temperature and varies between 3.7–4.7 μm. (b) The positive anode electrode reaction for the electrolysis of molten lead … A (wet) finger can be dipped into molten lead without risk of a burning injury. [262], The use of lead for water pipes is a problem in areas with soft or acidic water. [268], Treatment for lead poisoning normally involves the administration of dimercaprol and succimer. No elements with odd atomic numbers have more than two stable isotopes; even-numbered elements have multiple stable isotopes, with tin (element 50) having the highest number of isotopes of all elements, ten. This word is related to the Latin plumbum, which gave the element its chemical symbol Pb. [99] This occurs in environments with a high neutron density, such as a supernova or the merger of two neutron stars. In the second half of the 18th century, Britain, and later continental Europe and the United States, experienced the Industrial Revolution. When PbO2 is heated in air, it becomes Pb12O19 at 293 °C, Pb12O17 at 351 °C, Pb3O4 at 374 °C, and finally PbO at 605 °C. ", "Reassessment of the Microcytic Anemia of Lead Poisoning", Proceedings of the National Academy of Sciences, Netherlands Organisation for Applied Scientific Research, "Transmetalation reactions producing organocopper compounds", "Encyclopedia Judaica: Ossuaries and Sarcophagi", "V.— The meanings and synonyms of plumbago", "Solid State Ionics: from Michael Faraday to green energy—the European dimension", Science and Technology of Advanced Materials, Metal stocks in Society – Scientific Synthesis, "Lead Poisoning in a Historical Perspective", 10.1002/1097-0274(200009)38:3<244::AID-AJIM3>3.0.CO;2-F, "A History of Cosmetics from Ancient Times", "Greenland ice evidence of hemispheric lead pollution two millennia ago by Greek and Roman civilizations", "Livechart - Table of Nuclides - Nuclear structure and decay data", New Study Finds Lead Levels in a Majority of Paints Exceed Chinese Regulation and Should Not be on Store Shelves, Timbal dalam Cat Enamel Rumah Tangga di Indonesia, "Chemical bonding of main-group elements", "Stable Radicals of the Heavy p-Block Elements". The white faces of women "came to represent their feminine virtue as Japanese women",[163] with lead commonly used in the whitener.[164]. Lead(II) selenide Identifiers CAS number: 12069-00-0: Properties Molecular formula: PbSe Molar mass: 286.16 g/mol Melting point: 1078 °C Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references [224], Lead is used in high voltage power cables as sheathing material to prevent water diffusion into insulation; this use is decreasing as lead is being phased out. lead selenide crystal PbSe,physical properties,suppliers,CAS,MSDS,structure,Molecular Formula, Molecular Weight ,Solubility,boiling point, melting point Home Products Search Properties Search 中文版: Home > Dictionary > Information: lead selenide crystal PbSe Molecular formula : CAS : nature : Periodic Table IV, VI compound semiconductor group. I can write the formula for an ionic compound, given the elements involved or the name of the compound I can write the name of an ionic compound, given the elements involved or the formula of the compound In the following pages you will find worksheets to practice your skills and understanding. [291], Lead waste, depending on the jurisdiction and the nature of the waste, may be treated as household waste (in order to facilitate lead abatement activities),[292] or potentially hazardous waste requiring specialized treatment or storage. The version of record as reviewed is: Mikhail Boldyrev; et al. [215][216] Lead is an established shielding material from radiation in nuclear science and in X-ray rooms[217] due to its denseness and high attenuation coefficient. High purity, submicron and nanopowder forms may be considered. The resulting concentrate, which has a lead content of 30–80% by mass (regularly 50–60%),[187] is then turned into (impure) lead metal. It is a III-VI layered semiconductor. … [286] Lead may still be found in harmful quantities in stoneware,[287] vinyl[288] (such as that used for tubing and the insulation of electrical cords), and Chinese brass. This led to research into the effects of lead intake. H 3 O + Hydronium. Example: The first box is the intersection between the “zinc” cation and the “chloride” anion, so you should write “ZnCl 2”, as shown. [104], Lead is classified as a chalcophile under the Goldschmidt classification, meaning it is generally found combined with sulfur. [128] Lead coffins, cast in flat sand forms, with interchangeable motifs to suit the faith of the deceased were used in ancient Judea. The names are found by finding the intersection between the cations and anions. [241] Its prevalence in the human body—at an adult average of 120 mg[u]—is nevertheless exceeded only by zinc (2500 mg) and iron (4000 mg) among the heavy metals. Indium (II) selenide (InSe) is an inorganic compound composed of indium and selenium. [270], The extraction, production, use, and disposal of lead and its products have caused significant contamination of the Earth's soils and waters. Moles to Grams Calculator. The updated content was reintegrated into the Wikipedia page under a CC-BY-SA-3.0 license (2018). If you want grasp the item comprehensively,please see below "more details data". Scrap lead from the building trade is usually fairly clean and is re-melted without the need for smelting, though refining is sometimes needed. [110], Lead is added to copper alloys, such as brass and bronze, to improve machinability and for its lubricating qualities. [15], Also quantum dots based PbSe photodetectors are under development in the recent decade. Calcium Selenide. Much of the current research on this salt is focused on its nanoparticles. It is used for manufacture of infrared detectors for thermal imaging,[4] operating at wavelengths between 1.5–5.2 μm. Name. The strong quantum confinement effect in lead selenide (PbSe) colloidal quantum dots (CQDs) allows to tune the bandgap of the material, covering a large spectral range from mid- to near infrared (NIR). N 3− Nitride. The neutron flux involved may be on the order of 1022 neutrons per square centimeter per second. Sodium sulfide, another ionic compound, has the formula \(\ce{Na_2S}\). Lead poisoning and gout were linked; British physician Alfred Baring Garrod noted a third of his gout patients were plumbers and painters. [79], Numerous mixed lead(II,IV) oxides are known. The solid has a structure consisting of two-dimensional layers bonded together only by van der Waals forces. Subsequent theoretical work at Oak Ridge National Laboratory, USA predicted that its p-type performance could equal or exceed that of the sister compound, lead telluride.

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