Lead

• Lead released into the environment makes its way into the air, soils, and water can remain in the environment as dust indefinitely. The lead in fuels contributes to air pollution, especially in urban areas.
• Plants exposed to lead can absorb the metal dust through their leaves. Plants can also take up minimal amounts of lead from the soil.

• Phase at STP(Standard conditions for temperature and pressure) : Solid
• Melting point: 600.61 K
• Boiling point: 2022 K
• Density: 11.34 g/cm³

Lead was one of the earliest metals discovered by the human race and was in use by 3000 B.C. The ancient Romans used lead for making water pipes and lining baths, and the plumber who joins and mends pipes takes his name from the Latin word plumbum, meaning lead. Plumbum is also the origin of the terms 'plumb bob' and 'plumb line,' used in surveying and also the chemical symbol for lead, Pb.