Comparison of Phosphorus and Bromine

Attribute	Bromine ×	Phosphorus ×
Atomic mass (u)	79.9	30.973762
Standard state	Liquid	Solid
Oxidation states	-1 +1 +5	-3 +3 +5
Electron configuration	[Ar]4s²3d¹⁰4p⁵	[Ne]3s²3p³
Atomic radius (van der waals) (pm)	183	180
Electronegativity (pauling scale)	2.96	2.19
Electron affinity (eV)	3.365	0.746
Ionization energy (eV)	11.814	10.487
Boiling point (K)	331.95	553.65
Melting point (K)	265.95	317.3
Density (g/cm³)	3.11	1.82
Atomic number	35	15
Group name	Halogen	Nonmetal
Discovered (year)	1826	1669
Symbol	Br	P