platinum

Symbol: Pt
Atomic number: 78
Atomic weight: 195.078
Group: 10
Group name: Precious metal or platinum group metal
Period: 6
Block: d
CAS ID: 7440-06-4
Shell structure: 2.8.18.32.17.1
Electron configuration: [Xe].4f14.5d9.6s1
State: |standardstate|
Melting point: 2041.4 [or 1768.3 °C (3214.9 °F)]
Boiling point: 4098 [or 3825 °C (6917 °F)]
Ionization energy/kJ per mol: 870
Common oxidation states: 4, and 2
Pauling electronegativity: 2.28