10 · Ne
Neon
Separated from liquid air by Ramsay and Travers in 1898.
Identity
- Atomic number
- 10
- Symbol
- Ne
- Canonical name
- Neon
- Category
- noble gas
- Group
- 18
- Period
- 2
- Block
- p
Properties
These quantities come from the Periodic Table JSON compilation. They have not yet been checked, one by one, against CIAAW atomic weights or NIST measurements. A value marked estimated is not a measurement.
- Atomic mass
- 20.17976 u
- Electron configuration
- [He] 2s2 2p6
- Electrons per shell
- 2, 8
- Standard state
- gas
- Density
- 0.9002 g/L
- Melting point
- 24.56 K
- Boiling point
- 27.104 K
- First ionization energy
- 2,080.7 kJ/mol
- Electron affinity
- -116 kJ/mol
History
Neon in liquid air
Discovery · confirmed · 1898
Ramsay and Travers separate neon from liquid-air residues.
Etymology
- Theme
- other
- Language
- grec
- Root
- neos
- Meaning
- new
Scientists
Places and institutions
- London — historical setting : United Kingdom — present country : United Kingdom
See also
Sources
- IUPAC, Periodic Table of the Elements
- Bowserinator, Periodic Table JSON. Compilation secondaire d’où viennent les grandeurs physiques importées (masse, densité, températures, énergies). Elles ne sont pas revérifiées une à une auprès du NIST ou de la CIAAW.
- John Emsley, Nature’s Building Blocks: An A–Z Guide to the Elements