10 Ne 20.18
Neon
noble gas
Properties
- Atomic number
- 10
- Atomic mass
- 20.18 u
- Category
- noble gas
- Group
- 18
- Period
- 2
- Block
- p-block
- State (room temp)
- Gas
- Outer-shell electrons
- 8
- Electronegativity
- —
- Density
- —
- Melting point
- -248.59 °C
- Boiling point
- -246.05 °C
Electron configuration
1s² 2s² 2p⁶
Noble-gas shorthand: [He] 2s² 2p⁶
Electrons per shell: 2, 8 — that's 8 in the outermost shell.
About 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.
- Discovered by Morris Travers
- Appearance: colorless gas exhibiting an orange-red glow when placed in a high voltage electric field
Position in the periodic table
Data compiled from Wikipedia, PubChem, and IUPAC. Source.