15 P

Phosphorus

Nonmetal
Atomic number15
CategoryNonmetal
Atomic mass30.974
Electron configuration[Ne]3s² 3p³
Oxidation states−3 … +5
Electronegativity2.19
Melting point44.2 °C
Boiling point280.5 °C
Density1.82 g/cm³
Crystal structureTriclinic (white)
Group15
Period3
Blockp
Discovered1,669
Crustal abundance1,050 ppm

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