| Property | Value |
|---|---|
| Atomic number | 10 |
| Atomic weight | 20.17976 amu |
| Electronic configuration | 1s2 |
| Stable and very long lived isotopes | 20Ne: 90.51%, 21Ne: 0.27%, 22Ne: 9.22% |
| Density | 0.0008999 g/cm3 (STP) |
| Melting | -248.447 °C |
| Boiling | -246.1 °C |
| Covalent radius | 0.69 Å |
| Van der Waals radius | 1.54 Å |
| First ionization potential | 21.564 eV |
| Electron affinity | 0.301 eV |
| Sample compounds |
|---|
| Ne2 |
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