Phosphorus vs Calcium

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PropertyP PhosphorusCa Calcium
Atomic number1520
SymbolPCa
NamePhosphorusCalcium
Categorynonmetalalkaline-earth-metal
Standard Atomic Weight30.973762 u40.078 u
Period34
Group152
Blockps
Phase at STPsolidsolid
Electron configuration[Ne]3s23p3[Ar]4s2
Oxidation states[-3, -2, -1, 0, 1, 2, 3, 4, 5][1, 2]
Electronegativity (Pauling)2.191
Electron affinity0.7466 eV0.0245 eV
Density1820 kg/m³1540 kg/m³
Melting point44.15 °C841.85 °C
Boiling point280.5 °C1483.85 °C
Discovery year16691808