Comparison of Technetium and Platinum

Attribute	Platinum ×	Technetium ×
Atomic mass (u)	195.08	96.90636
Standard state	Solid	Solid
Oxidation states	+2 +4	+4 +6 +7
Electron configuration	[Xe]6s¹4f¹⁴5d⁹	[Kr]5s²4d⁵
Atomic radius (van der waals) (pm)	209	209
Electronegativity (pauling scale)	2.28	1.9
Electron affinity (eV)	2.128	0.55
Ionization energy (eV)	9	7.28
Boiling point (K)	4098	4538
Melting point (K)	2041.55	2430
Density (g/cm³)	21.46	11
Atomic number	78	43
Group name	Transition metal	Transition metal
Discovered (year)	1735	1937
Symbol	Pt	Tc