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Lead


6
82
207.2
KEY
Chemical Element Symbol Key

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Lead
Columbia Encyclopedia
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Bismuth (Bi)
Symbol: Pb
Atomic Number: 82
Atomic Weight: 207.2
Element Classification: Other Metal
Discovered By: Known to the ancients.
Discovery Date: n/a (Unknown)
Name Origin: Anglo-Saxon: lead; symbol from Latin: plumbum.
Density (g/cc): 11.35
Melting Point (K): 600.65
Boiling Point (K): 2013
Appearance: Very soft, highly malleable and ductile, blue-white shiny metal
Atomic Radius (pm): 175
Atomic Volume (cc/mol): 18.3
Covalent Radius (pm): 147
Ionic Radius: 84 (+4e) 120 (+2e)
Specific Heat (@20°C J/g mol): 0.159
Fusion Heat (kJ/mol): 4.77
Evaporation Heat (kJ/mol): 177.8
Thermal Conductivity (@25°C W/m K):
Debye Temperature (K): 88.00
Pauling Negativity Number: 1.8
First Ionizing Energy (kJ/mol): 715.2
Oxidation States: 4, 2
Electronic Configuration: [Xe] 4f14 5d10 6s2 6p2
Lattice Structure: Face-Centered Cubic (FCC
Lattice Constant (Å): 4.950
Lattice C/A Ratio: n/a


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