Radon |
| Symbol | Rn |
|---|---|
| Latin name | Radon |
| Atomic number | 86 |
| Period | 6 |
| Element category | Noble gases |
| Relative atomic mass | 222.0176 |
| Group | VIII.A |
| Oxidation numbers | 2 |
| Electron configuration | 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 |
| Density [g/cm3] | 0.00919 |
| State | Gas |
| Melting point [°C] | -71 |
| Boiling point [°C] | -61.8 |
| Critical point [°C] | 104 |
| Critical pressure [MPa] | 6.28 |
| Atomic radius [pm] | 120 |
| Covalent radius [pm] | 145 |
| Thermal conductivity [W m-1K-1] | 0.00364 |
| Heat capacity [J K-1g-1] | 0.094 |
| Discovery | 1900 |
| 1.st ionization energy [eV] | 10.7485 |
| Stable isotopes | 0 |
| Unstable isotopes | 20 |