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Pb (Lead )
Lead is extremely toxic, but its effects are accumulative and most often develop after extended exposure. Lead affects the nervous system, causing mental retardation or other nervous disorders. It also affects other organs of the body. People suffering from lead poisoning may exhibit weakness, general disability, nervous disorders and eventual death. Children are most susceptable, partly because they have rapid motabolism and are small and partly because of their habits. They chew on things that might contain lead paint and play on floors and ground that might be contaminated, often putting their fingers in their mouth.
Nama lain (trademark, branding etc.)
Plumbum, Olovo, Plomb, Blei - s, Piombo, Свинец, Plomo, Bly
Spesifikasi ProdukOverview of Lead Atomic Number 82 Group 14 Period 6 Series Metals Relative Atomic Mass (12C=12.000) 207.2 Boiling Point 2013K 1740°C 3164°F Melting Point 600.75K 327.6°C 621.7°F Density/kg m-3 11350 (293K) Ground State Electron Configuration [Xe]4f145d106s26p2 Electron Affinity(M-M-)/kJ mol-1 -35.2 Discoverer: Known to ancient civilization Discovery Location: Unknown Discovery Year: Unknown Name Origin: Latin: plumbum; Anglo-Saxon: lead
Lead is very resistant to corrosion - lead pipes from Roman times are still in use today - and is often used to store corrosive liquids. Great quantities of lead, both as the metal and the dioxide, are used in batteries. Lead is also used in cable covering, plumbing and ammunition. Tetraethyl lead is used as an anti-knock agent in petrol, and as an additive in paints. The use of lead in plumbing, petrol and paints has been reduced in the past few years because of environmental concern, as lead is a cumulative poison and is thought to affect brain development and function, especially in young children. Lead is an effective shield around X-ray equipment and nuclear reactors. Lead oxide is used in the production of fine crystal glass.
Lead is a chemical element in the carbon group with symbol Pb (from Latin: plumbum) and atomic number 82. Lead is a soft and malleable metal, which is regarded as a heavy metal and poor metal.
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