Precious Metal Elements

Platinum[  Atomic number78  Atomic weight195.084  ]

From catalysts to anticancer agents, a promising star with much hidden potential.

Pt Platinum
Atomic number 78
Atomic weight 195.084
Isotope 190Pt, 192Pt, 194Pt, 195Pt, 196Pt, 198Pt
Crystal Structure fcc
Metallicity Trans.Metal
Shell 2,8,18,32,17,1
Filling Orbital 5d9
Oxidation States 2,4
Atomic Radius Å 1.39
Covalent Radius Å 1.30
Atomic Volume cm3/mol 9.10
Density at 293K g/cm3 21.45
Melting Point 1768.2
Boiling Point 3827
Specific Heat J/gK 0.13
Heat of Fusion kJ/mol 21.7
Heat of Vaporization kJ/mol 510.0
Thermal Conductivity at 273K W/cmK 0.72
Specific Resistance at 273K 10-6 Ωcm 9.81
Coefficient of Linear expansion at 293K 10-6 K-1 8.8
Ionization Potential V 8.9588
2nd Ionization Potential V 18.563
Electron Affinity eV 2.128
Electronegativity 2.2
Discovery year 1748