Comparison of Chromium and Palladium

Attribute	Palladium ×	Chromium ×
Atomic mass (u)	106.42	51.996
Standard state	Solid	Solid
Oxidation states	+2 +3	+2 +3 +6
Electron configuration	[Kr]4d¹⁰	[Ar]3d⁵4s¹
Atomic radius (van der waals) (pm)	202	189
Electronegativity (pauling scale)	2.2	1.66
Electron affinity (eV)	0.557	0.666
Ionization energy (eV)	8.337	6.767
Boiling point (K)	3236	2944
Melting point (K)	1828.05	2180
Density (g/cm³)	12	7.15
Atomic number	46	24
Group name	Transition metal	Transition metal
Discovered (year)	1803	1797
Symbol	Pd	Cr