| Property | Value |
|---|---|
| Atomic number | 78 |
| Atomic weight | 195.0849 amu |
| Element family | Transition metals |
| Electronic configuration | 1s2 |
| Stable and very long lived isotopes | 192Pt: 0.79%, 194Pt: 32.9%, 195Pt: 33.8%, 196Pt: 25.3%, 198Pt: 7.2% |
| Previous element | Iridium |
| Next element | Gold |
| Density | 21.46 g/cm3 (STP) |
| Melting | 1772 °C |
| Boiling | 3827 °C |
| Covalent radius | 1.23 Å |
| Van der Waals radius | 1.75 Å |
| Ionic radius | 0.625 Å |
| Metallic radius | 1.385 Å |
| First ionization potential | 9.017 eV |
| Electron affinity | 2.125 eV |
| Electronegativity | 2.28 |
| Discovery year | 600 BC |
| Sample compounds |
|---|
| PtCl2(NH3)2 |
| Pt(NH3)2Cl2 |
| K2PtCl4 |
| K2PtCl6 |
| PtO2 |
| H2PtCl6 |
Platinum is an element number 78 from transition metals family. Its symbol is Pt. Platinum atomic weight is 195.0849 amu. Pt stable and long lived isotopes are 192Pt: 0.79%, 194Pt: 32.9%, 195Pt: 33.8%, 196Pt: 25.3%, 198Pt: 7.2%. Platinum electronic configuration is 1s22s22p63s23p63d104s24p64d104f145s25p66s15d9. Sample compounds that contain Platinum are PtCl2(NH3)2, Pt(NH3)2Cl2, K2PtCl4, K2PtCl6, PtO2, H2PtCl6.
Please let us know how we can improve this web app.
