Platinum
Platinum (铂, symbol Pt) is chemical element number 78, a Transition Metal in period 6, group 10 of the periodic table, with a standard atomic weight of about 195.08. Dense, malleable, precious metal. Used in jewelry, catalytic converters, and laboratory equipment.
Properties
| Atomic number | 78 |
|---|---|
| Symbol | Pt |
| Atomic mass | 195.08 u |
| Category | Transition Metal |
| Period | 6 |
| Group | 10 |
| Electron configuration | [Xe] 4f¹⁴ 5d⁹ 6s¹ |
| Electronegativity | 2.28 |
| Covalent radius | 136 pm |
| Density | 21.45 g/cm³ |
| Melting point | 2041.4 K |
| Boiling point | 4098 K |
| Discovery | Antonio de Ulloa, 1735 |
Overview
Dense, malleable, precious metal. Used in jewelry, catalytic converters, and laboratory equipment. Platinum (Pt) is a Transition Metal with atomic number 78, located in period 6, group 10. As a transition metal it commonly shows several oxidation states, forms coloured compounds, and is widely used in catalysts and alloys.
It has the configuration [Xe] 4f¹⁴ 5d⁹ 6s¹ and an electronegativity near 2.28; its 1 outer-shell electron drives its bonding. Under standard conditions it exists as a solid (a very high melting point); it melts near 2041.4 K (1768.3 °C), boils near 4098 K (3824.9 °C), has a density around 21.45 g/cm³.
It is widely used in Catalysis, Precious Metal and Medical / Pharma. It was first described by Antonio de Ulloa in 1735. Use the comparison tool to line it up against other elements.
Electron shells
Electrons per shell: 2 · 8 · 18 · 32 · 17 · 1
Main uses
- Catalysis
- Precious Metal
- Medical / Pharma
Hazard
Compounds containing Platinum
No compounds in this knowledge base contain Platinum yet.
Data sources
Atomic mass uses IUPAC (CIAAW) standard atomic weights; the covalent radius is from Cordero et al. (2008). Verify on the RSC Periodic Table, PubChem and Wikipedia. Educational reference only.