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Lead (82Pb207.2)
[7439-92-1]

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Elemental Form

One of the oldest known metals, lead is bluish-white, lustrous, and soft. It is highly malleable, ductile, insoluble in water, and noncombustible. Lead is a poor electrical conductor and a very effective sound absorber. It is relatively impenetrable to radiation, making it an effective shield of X-ray equipment and nuclear reactors. Lead is very resistant to corrosion and is often used to contain corrosive liquids.
Melting Point327.5°CBoiling Point1749°C
Density11.34g/cm3Themal Conductivity @ 0°C0.083cal/cm2/cm/s/°C
Specific Heat @ 0°C0.0306cal/g°CLatent Heat of Fusion5.86k-cal/g-atom
Latent Heat of Vaporization203cal/gAtomic Volume18.3W/D
First Ionization Energy171K-cal/g-moleElectronegativity1.8Pauling's
Covalent Radius1.47AngstromsBrinell Hardness (cast)4.2
Thermal Expansion29.3ppm/°CElectrical Resistivity @ 20°C20.6µΩ-cm
Crystal StructureCubic, face centeredVapor Pressure @ 1167°C10.0mmHg
Magnetic Susceptibility0.12x10-6cgsTensile Strength3000psi