Comparison of Germanium and Neodymium

Attribute	Neodymium ×	Germanium ×
Atomic mass (u)	144.24	72.63
Standard state	Solid	Solid
Oxidation states	+3	+2 +4
Electron configuration	[Xe]6s²4f⁴	[Ar]4s²3d¹⁰4p²
Atomic radius (van der waals) (pm)	229	211
Electronegativity (pauling scale)	1.14	2.01
Electron affinity (eV)	-	1.35
Ionization energy (eV)	5.525	7.9
Boiling point (K)	3347	3106
Melting point (K)	1294	1211.4
Density (g/cm³)	7.01	5.323
Atomic number	60	32
Group name	Lanthanide	Metalloid
Symbol	Nd	Ge
Discovered (year)	1885	1886