Atomic Properties
- Atomic Number
- 10
- Atomic Mass
- 20.1800 u
- Electron Configuration
- [He] 2s2 2p6
- Electronegativity
- —
- Block
- p-block
- Group
- 18
- Period
- 2
Physical Properties
- Phase (STP)
- gas
- Melting Point
- 24.56 K
- Boiling Point
- 27.10 K
- Density
- 0.0009 g/cm³
About Neon
Noble gas famous for bright reddish-orange glow in discharge tubes.
Isotopes of Neon
Neon has 3 naturally occurring isotopes.
| Isotope | Mass Number | Atomic Mass (u) | Abundance | Type |
|---|---|---|---|---|
| 20Ne | 20 | 19.99244018 | 90.48% | Stable |
| 21Ne | 21 | 20.99384669 | 0.2700% | Stable |
| 22Ne | 22 | 21.99138511 | 9.250% | Stable |
Data source: NIH PubChem (aggregated from IUPAC, NIST)