Comparison of Manganese and Samarium

Attribute	Samarium ×	Manganese ×
Standard state	Solid	Solid
Electron configuration	[Xe]6s²4f⁶	[Ar]4s²3d⁵
Atomic mass (u)	150.4	54.93804
Electronegativity (pauling scale)	1.17	1.55
Oxidation states	+2 +3	+2 +3 +4 +7
Ionization energy (eV)	5.644	7.434
Atomic radius (van der waals) (pm)	229	197
Boiling point (K)	2067	2334
Melting point (K)	1347	1519
Density (g/cm³)	7.52	7.3
Atomic number	62	25
Group name	Lanthanide	Transition metal
Discovered (year)	1879	1774
Symbol	Sm	Mn