हिन्दी में पढ़ेंHome › Elements › Platinum
Platinum (Pt)
Atomic number 78 · transition
| Atomic number | 78 |
|---|---|
| Atomic mass | 195.084 u |
| Molar mass | 195.084 g/mol |
| Category | transition |
| Group / period / block | 10 / 6 / d |
| Electron configuration | [Xe] 4f14 5d9 6s |
| Electrons per shell | 2, 8, 18, 32, 17, 1 |
| Electronegativity (Pauling) | 2.2 |
| Atomic radius | 135.0 pm |
| Density | 21.5 g/cm³ |
| First ionisation energy | 8.9588 eV |
| Melting point | 2041.35 K (1768.20 °C) |
| Boiling point | 4098.15 K (3825.00 °C) |
| Common oxidation states | +2, +4 |
| Abundance in Earth's crust | 0.005 ppm |
Uses
Jewellery, catalytic converters, lab ware
Discovery
1735, Julius Scaliger