Comparison of Cesium and Polonium

Attribute	Polonium ×	Cesium ×
Atomic mass (u)	208.98243	132.905452
Standard state	Solid	Solid
Oxidation states	+2 +4	+1
Electron configuration	[Xe]6s²4f¹⁴5d¹⁰6p⁴	[Xe]6s¹
Atomic radius (van der waals) (pm)	197	343
Electronegativity (pauling scale)	2	0.79
Electron affinity (eV)	1.9	0.472
Ionization energy (eV)	8.417	3.894
Boiling point (K)	1235	944
Melting point (K)	527	301.59
Density (g/cm³)	9.32	1.93
Atomic number	84	55
Group name	Metalloid	Alkali metal
Discovered (year)	1898	1860
Symbol	Po	Cs