Lead: 1. Symbol Pb A soft, malleable, ductile, bluish-white, dense metallic element, extracted chiefly from galena and used in containers and pipes for corrosives, solder and type metal, bullets, radiation shielding, paints, and antiknock compounds. Atomic number 82; atomic weight 207.2; melting point 327.5°C; boiling point 1,744°C; specific gravity 11.35; valence 2, 4.
Also on the Periodic table at symbol Pb
Gold: a precious yellow metallic element, highly malleable and ductile, and not subject to oxidation or corrosion. Symbol: Au; atomic weight: 196.967; atomic number: 79; specific gravity: 19.3 at 20°C.
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Periodic table symbol Au
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