Platinum
Elemental State Pt
Electron Configuration 1s22s22p63s23p63d104s24p64d104f145s25p66s15d9
First Ionization Potential 8.959 eV
Electron Affinity 2.128 eV
Z*  
Pauling Electronegativity 2.2
Covalent Radius 1.28 Å
Metallic Radius 1.39 Å
Ionic Radius 0.74 Å Pt2+ coordination number = 4, square planar

0.94 Å Pt2+ coordination number = 6

0.765 Å Pt4+ coordination number = 6

van der Waal's Radius 1.72 Å
Melting Point 1768 oC
Boiling Point 3825 oC
Density 21.45 g/cm3
Other Properties