Comparison of Cobalt and Palladium

Attribute	Palladium ×	Cobalt ×
Atomic mass (u)	106.42	58.93319
Standard state	Solid	Solid
Oxidation states	+2 +3	+2 +3
Electron configuration	[Kr]4d¹⁰	[Ar]4s²3d⁷
Atomic radius (van der waals) (pm)	202	192
Electronegativity (pauling scale)	2.2	1.88
Electron affinity (eV)	0.557	0.661
Ionization energy (eV)	8.337	7.881
Boiling point (K)	3236	3200
Melting point (K)	1828.05	1768
Density (g/cm³)	12	8.86
Atomic number	46	27
Group name	Transition metal	Transition metal
Discovered (year)	1803	1735
Symbol	Pd	Co