Comparison of Tungsten and Rhenium

Attribute	Rhenium ×	Tungsten ×
Atomic mass (u)	186.207	183.84
Standard state	Solid	Solid
Oxidation states	+4 +6 +7	+6
Electron configuration	[Xe]6s²4f¹⁴5d⁵	[Xe]6s²4f¹⁴5d⁴
Atomic radius (van der waals) (pm)	217	210
Electronegativity (pauling scale)	1.9	2.36
Electron affinity (eV)	0.15	0.815
Ionization energy (eV)	7.88	7.98
Boiling point (K)	5869	5828
Melting point (K)	3459	3695
Density (g/cm³)	20.8	19.3
Atomic number	75	74
Group name	Transition metal	Transition metal
Discovered (year)	1925	1783
Symbol	Re	W