Comparison of Palladium and Holmium

Attribute	Palladium ×	Holmium ×
Atomic mass (u)	106.42	164.93033
Standard state	Solid	Solid
Oxidation states	+2 +3	+3
Electron configuration	[Kr]4d¹⁰	[Xe]6s²4f¹¹
Atomic radius (van der waals) (pm)	202	216
Electronegativity (pauling scale)	2.2	1.23
Electron affinity (eV)	0.557	-
Ionization energy (eV)	8.337	6.022
Boiling point (K)	3236	2973
Melting point (K)	1828.05	1747
Density (g/cm³)	12	8.8
Atomic number	46	67
Group name	Transition metal	Lanthanide
Symbol	Pd	Ho
Discovered (year)	1803	1878