Comparison of Sodium and Polonium

Attribute	Polonium ×	Sodium ×
Atomic mass (u)	208.98243	22.9897693
Standard state	Solid	Solid
Oxidation states	+2 +4	+1
Electron configuration	[Xe]6s²4f¹⁴5d¹⁰6p⁴	[Ne]3s¹
Atomic radius (van der waals) (pm)	197	227
Electronegativity (pauling scale)	2	0.93
Electron affinity (eV)	1.9	0.548
Ionization energy (eV)	8.417	5.139
Boiling point (K)	1235	1156
Melting point (K)	527	370.95
Density (g/cm³)	9.32	0.97
Atomic number	84	11
Group name	Metalloid	Alkali metal
Discovered (year)	1898	1807
Symbol	Po	Na