Comparison of Sodium and Cadmium

Attribute	Cadmium ×	Sodium ×
Atomic mass (u)	112.41	22.9897693
Standard state	Solid	Solid
Oxidation states	+2	+1
Electron configuration	[Kr]5s²4d¹⁰	[Ne]3s¹
Atomic radius (van der waals) (pm)	158	227
Electronegativity (pauling scale)	1.69	0.93
Electron affinity (eV)	-	0.548
Ionization energy (eV)	8.994	5.139
Boiling point (K)	1040	1156
Melting point (K)	594.22	370.95
Density (g/cm³)	8.69	0.97
Atomic number	48	11
Group name	Transition metal	Alkali metal
Symbol	Cd	Na
Discovered (year)	1817	1807