Comparison of Germanium and Curium

Attribute	Curium ×	Germanium ×
Atomic mass (u)	247.07035	72.63
Standard state	Solid	Solid
Oxidation states	+3	+2 +4
Electron configuration	[Rn]7s²5f⁷6d¹	[Ar]4s²3d¹⁰4p²
Atomic radius (van der waals) (pm)	245	211
Electronegativity (pauling scale)	1.3	2.01
Electron affinity (eV)	-	1.35
Ionization energy (eV)	6.02	7.9
Boiling point (K)	3400	3106
Melting point (K)	1618	1211.4
Density (g/cm³)	13.51	5.323
Atomic number	96	32
Group name	Actinide	Metalloid
Symbol	Cm	Ge
Discovered (year)	1944	1886