10NeNeon20.17976[He] 2s² 2p⁶
noble gas
Neon
Neon is a chemical element with symbol Ne and atomic number 10. It is in group 18 (noble gases) of the periodic table. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air.
A stylized shell model. Electrons are quantum objects, not particles following these literal paths. Sizes and motion are illustrative.
Electrons by shell
Electron configuration
2s2
2p6
At a glance
- Atomic number
- 10
- Atomic mass
- 20.17976 u
- Phase
- Gas
- Density
- 0.9002 g/L
- Melting point
- 24.56 K
- Boiling point
- 27.104 K
- First ionization energy
- 2,080.7 kJ/mol
- Electronegativity
- Unavailable
- Electron affinity
- -116 kJ/mol
- Molar heat capacity
- Unavailable
- Period
- 2
- Appearance
- colorless gas exhibiting an orange-red glow when placed in a high voltage electric field
Conditions and isotopes affect measured properties. Some properties of short-lived elements are predicted. Electronegativity uses the Pauling scale.
Keep exploring
Explore the stories, imagery, and reference data in more depth. Properties with no value in the reference are marked unavailable.