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 |