Chemically inert, optically unforgettable: neon is the orange-red glow that defined the twentieth-century city at night.
- Atomic number
- 10
- Atomic mass
- 20.18 u
- Phase
- Gas
- Electron configuration
- [He] 2s² 2p⁶
- Melting point
- 24.56 K · -248.6 °C
- Boiling point
- 27.07 K · -246.1 °C
- Density
- 0.001 g/cm³
- Electronegativity
- —
- Period / Group
- 2 / 18
- Discovery year
- 1898