Comparison of Boron and Platinum

Attribute	Platinum ×	Boron ×
Atomic mass (u)	195.08	10.81
Standard state	Solid	Solid
Oxidation states	+2 +4	+3
Electron configuration	[Xe]6s¹4f¹⁴5d⁹	[He]2s²2p¹
Atomic radius (van der waals) (pm)	209	192
Electronegativity (pauling scale)	2.28	2.04
Electron affinity (eV)	2.128	0.277
Ionization energy (eV)	9	8.298
Boiling point (K)	4098	4273
Melting point (K)	2041.55	2348
Density (g/cm³)	21.46	2.37
Atomic number	78	5
Group name	Transition metal	Metalloid
Discovered (year)	1735	1808
Symbol	Pt	B