Comparison of Beryllium and Manganese

Attribute	Beryllium ×	Manganese ×
Standard state	Solid	Solid
Electron configuration	[He]2s²	[Ar]4s²3d⁵
Atomic mass (u)	9.012183	54.93804
Electronegativity (pauling scale)	1.57	1.55
Oxidation states	+2	+2 +3 +4 +7
Ionization energy (eV)	9.323	7.434
Atomic radius (van der waals) (pm)	153	197
Boiling point (K)	2744	2334
Melting point (K)	1560	1519
Density (g/cm³)	1.85	7.3
Atomic number	4	25
Group name	Alkaline earth metal	Transition metal
Discovered (year)	1798	1774
Symbol	Be	Mn