| Radon ✕ | |
|---|---|
| Symbol | Rn |
| Atomic number | 86 |
| Chemical property | Noble gas |
| Origin o the name | From radium, as it was first detected as an emission from radium during radioactive decay |
| Group | 18 |
| Period | 6 |
| Density (g/cm³) | 0.00973 |
| Melting point (K) | 202 |
| Boiling point (K) | 211.3 |
| Heat capacity (J/(g·K)) | 0.094 |
| Electro-negativity | 2.2 |
| Abundance in earth's crust (mg/kg) | 0 |