Comparison of Phosphorus and Cesium

Attribute	Cesium ×	Phosphorus ×
Atomic mass (u)	132.905452	30.973762
Standard state	Solid	Solid
Oxidation states	+1	-3 +3 +5
Electron configuration	[Xe]6s¹	[Ne]3s²3p³
Atomic radius (van der waals) (pm)	343	180
Electronegativity (pauling scale)	0.79	2.19
Electron affinity (eV)	0.472	0.746
Ionization energy (eV)	3.894	10.487
Boiling point (K)	944	553.65
Melting point (K)	301.59	317.3
Density (g/cm³)	1.93	1.82
Atomic number	55	15
Group name	Alkali metal	Nonmetal
Discovered (year)	1860	1669
Symbol	Cs	P