Stable isotope Platinum (Pt)

 
Isotope Z(p) N(n) Atomic Mass Natural Abundance Enrichment Level Chemical Form
Pt-190 78 112 189.95993 0.014% 4.00% Metal
Pt-192 78 114 191.961035 0.782% 56.00% Metal
Pt-194 78 116 193.962663 32.967% >96.00% Metal
Pt-195 78 117 194.964774 33.832% >96.00% Metal
Pt-196 78 118 195.964934 25.242% >97.00% Metal
Pt-198 78 120 197.967875 7.163% >91.00% Metal

Properties of Platinum

Name Platinum
Symbol Pt
Atomic number 78
Atomic weight 195.09
Standard state Solid at 298 ºK
CAS Registry ID 7440-06-4
Group in periodic table 10
Group name Precious metal or platinum group metal
Period in periodic table 6
Block in periodic table d-block
Color Grayish white
Classification Metallic
Melting point 1768.4 °C
Boiling point 3827 °C
Vaporization point 3825 ºC
Thermal conductivity 71.6 W/(m·K) at 298.2 ºK
Electrical resistivity 10.6 µΩ·cm at 20 ºC
Electronegativity 2.2
Specific heat 0.13 kJ/kg K
Heat of vaporization 490 kJ·mol-1
Heat of fusion 20 kJ·mol-1
Density of liquid 19.77 g/cm3 
Density of solid 21.5 g/cm3 
Electron configuration [Xe]4f145d96s1
Atomic radius 1.39 Å
Ionic radii Pt2+: 0.60 Å and Pt4+: 0.63 Å (coordination numbers 4 and 6)
Oxidation states +2, +3, +4
Most common oxidation state +4