Comparison of Silicon and Lutetium

Attribute	Lutetium ×	Silicon ×
Atomic mass (u)	174.9668	28.085
Standard state	Solid	Solid
Oxidation states	+3	-4 +2 +4
Electron configuration	[Xe]6s²4f¹⁴5d¹	[Ne]3s²3p²
Atomic radius (van der waals) (pm)	221	210
Electronegativity (pauling scale)	1.27	1.9
Electron affinity (eV)	-	1.385
Ionization energy (eV)	5.426	8.152
Boiling point (K)	3675	3538
Melting point (K)	1936	1687
Density (g/cm³)	9.84	2.3296
Atomic number	71	14
Group name	Lanthanide	Metalloid
Symbol	Lu	Si
Discovered (year)	1907	1854