Atomic number 78
Platinum
Transition metal
Quick facts
- Atomic mass
- 195.08
- Group
- 10
- Period
- 6
- State (STP)
- solid
- Electronegativity
- 2.28
- Common ox. states
- +2, +4
Properties
Electron configuration
[Xe] 4f¹⁴ 5d⁹ 6s¹
- Ionization energy
- 870.0 kJ/mol
- Electron affinity
- 205.3 kJ/mol
- Melting point
- 2041.40 K (1768.3 °C)
- Boiling point
- 4098.00 K (3824.8 °C)
How it bonds
Platinum has another anomalous configuration ([Xe] 4f¹⁴ 5d⁹ 6s¹). Common +2 (cisplatin, the chemotherapy drug) and +4 states. Used in catalytic converters, electrodes, jewelry. Almost completely chemically inert at room temperature.