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Phosphorus


3
15
30.973762
KEY
Chemical Element Symbol Key

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Phosphorus
Columbia Encyclopedia
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Sulfur (S)
Symbol: P
Atomic Number: 15
Atomic Weight: 30.973762
Element Classification: Non-Metal
Discovered By: Hennig Brand
Discovery Date: 1669 (Germany)
Name Origin: Greek: phosphoros, (bringer of light).
Density (g/cc): 1.82 (white phosphorus)
Melting Point (K): 317.3
Boiling Point (K): 553
Appearance: The most common white form is a waxy, phosphorescent solid
Atomic Radius (pm): 128
Atomic Volume (cc/mol): 17.0
Covalent Radius (pm): 106
Ionic Radius: 35 (+5e) 212 (-3e)
Specific Heat (@20°C J/g mol): 0.757
Fusion Heat (kJ/mol): 2.51
Evaporation Heat (kJ/mol): 49.8
Thermal Conductivity (@25°C W/m K):
Debye Temperature (K): n/a
Pauling Negativity Number: 2.19
First Ionizing Energy (kJ/mol): 1011.2
Oxidation States: 5, 3, -3
Electronic Configuration: [Ne] 3s2 3p3
Lattice Structure: Cubic (CUB)
Lattice Constant (Å): 7.170
Lattice C/A Ratio: n/a


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