Lead
Uses, Properties, & Facts
lead (Pb), a soft, silvery white or grayish metal in Group 14 (IVa) of the periodic table. Lead is very malleable, ductile, and dense and is a poor conductor of electricity. Known in antiquity and believed by the alchemists to be the oldest of metals, lead is highly durable and resistant to corrosion, as is indicated by the continuing use of lead water pipes installed by the ancient Romans. The symbol Pb for lead is an abbreviation of the Latin word for lead, plumbum.
atomic number | 82 |
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atomic weight | 207.19 |
melting point | 327.5 °C (621.5 °F) |
boiling point | 1,744 °C (3,171.2 °F) |
density | 11.29 gram/cm3 at 20 °C (68 °F) |
oxidation states | +2, +4 |
electron configuration | [Xe]4f145d106s26p2 or 1s22s22p63s23p63d104s24p64d104f145s25p65d106s26p2 |
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