Comparison of Zirconium and Platinum

Attribute	Platinum ×	Zirconium ×
Atomic mass (u)	195.08	91.22
Standard state	Solid	Solid
Oxidation states	+2 +4	+4
Electron configuration	[Xe]6s¹4f¹⁴5d⁹	[Kr]5s²4d²
Atomic radius (van der waals) (pm)	209	186
Electronegativity (pauling scale)	2.28	1.33
Electron affinity (eV)	2.128	0.426
Ionization energy (eV)	9	6.634
Boiling point (K)	4098	4682
Melting point (K)	2041.55	2128
Density (g/cm³)	21.46	6.52
Atomic number	78	40
Group name	Transition metal	Transition metal
Discovered (year)	1735	1789
Symbol	Pt	Zr