Neon
Chemical, physical and material properties and data of the chemical element Neon.
General Information about Neon
Regular nameNeonChemical symbolNeOther namesSystematic nameHistorical namesName meaning, originDiscovery (year)OccurencePosition in the PSEGroup membership
Atomar Properties of Neon
Atomic number Z10 = number of protonsStandard Atomic Weight20.1797 (6)
Electron configuration of Neon
| 1s | 2s | 2p | 3s | 3p | 3d | 4s | 4p | 4d | 4f | 5s | 5p | 5d | 5f | 6s | 6p | 6d | 6f | 7s | 7p |
|---|
| 2 | 2 | 6 | | | | | | | | | | | | | | | | | |
Abbreviated form: [He] 2s2 2p6 .
Ionization Energies of Neon
The following table lists the ionization energies IE (ionization potentials); the IE is the energy required in electron volts (eV) per atom to separate a given electron from an Neon atom.
| IE1 | IE2 | IE3 | IE4 | IE5 | IE6 | IE7 | IE8 |
|---|
| 21.56454 | 40.96296 | 63.45 | 97.12 | 126.21 | 157.93 | 207.2759 | 239.0989 |
Isotopic Data of Neon
An overview of the nuclides as well as the isotopic data and properties are listed on the following page: Neon isotopes.
Chemistry of Neon
Oxidation states0Electronegativity
4.789 (Allen)
11.3003 eV (Gosh Gupta)Electron affinity-1.2(2) eV
-116(19) kJ mol-1
Material and Physical Properties
Melting point- 248.59 °CEnthalpy of fusion (molar)0.335 kJ mol-1Boiling point- 246.046 °CEnthalpy of vaporization1.1736 kJ mol-1Density0.9002 g L -1 (0°C; 101.325 kPa)
External Data, Identifiers
CAS registry number7440-01-9InChI =1S/NeInChIKeyGKAOGPIIYCISHV-UHFFFAOYSA-NPubChem ID23935
Last update: 2022-12-28
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