โ–ธโ–ธ
  • ๐Ÿ‡ฌ๐Ÿ‡ง Neon
  • ๐Ÿ‡จ๐Ÿ‡ณ ๆฐ–
  • ๐Ÿ‡ณ๐Ÿ‡ฑ Neon
  • ๐Ÿ‡ซ๐Ÿ‡ท Néon
  • ๐Ÿ‡ฉ๐Ÿ‡ช Neon
  • ๐Ÿ‡ฎ๐Ÿ‡ฑ ื ื™ืื•ืŸ
  • ๐Ÿ‡ฎ๐Ÿ‡น Neo
  • ๐Ÿ‡ฏ๐Ÿ‡ต ใƒใ‚ชใƒณ
  • ๐Ÿ‡ต๐Ÿ‡น Néon
  • ๐Ÿ‡ท๐Ÿ‡บ ะะตะพะฝ
  • ๐Ÿ‡ช๐Ÿ‡ธ Neón
  • ๐Ÿ‡ธ๐Ÿ‡ช Neon

Neon: properties of free atoms

Neon atoms have 10 electrons and the shell structure is  2.8.

The ground state electron configuration of ground state gaseous neutral neon is  [He].2s2.2p6 and the term symbol is  1S0.

Kossel shell structure of neon
Schematic electronic configuration of neon.
Kossel shell structure of neon
The Kossel shell structure of neon.

Atomic spectrum

 

A representation of the atomic spectrum of neon.

Ionisation Energies and electron affinity

The electron affinity of neon is 0 kJ mol‑1. The ionisation energies of neon are given below.

Ionisation energies of neon
Ionisation energy number Enthalpy / kJ mol‑1
1st2080.66
2nd3952.32
3rd6119.42
4th9377.41
5th12181.0
6th15238.3
7th19998.6
8th23069.3
9th115378
10th131432
Ionisation energies of neon
Ionisation energies of neon.

Effective Nuclear Charges

The following are "Clementi-Raimondi" effective nuclear charges, Zeff. Follow the hyperlinks for more details and for graphs in various formats.

Effective nuclear charges for neon
1s9.6421  
2s5.76 2p5.76  
3s(no data) 3p(no data) 3d(no data)  
4s(no data) 4p(no data) 4d(no data) 4f(no data)
5s(no data) 5p(no data) 5d(no data)  
6s(no data) 6p(no data)  
7s   

References

These effective nuclear charges, Zeff, are adapted from the following references:

  1. E. Clementi and D.L.Raimondi, J. Chem. Phys. 1963, 38, 2686.
  2. E. Clementi, D.L.Raimondi, and W.P. Reinhardt, J. Chem. Phys. 1967, 47, 1300.

Electron binding energies

Electron binding energies for neon. All values of electron binding energies are given in eV. The binding energies are quoted relative to the vacuum level for rare gases and H2, N2, O2, F2, and Cl2 molecules; relative to the Fermi level for metals; and relative to the top of the valence band for semiconductors.
Label Orbital eV [literature reference]
K 1s870.2 [2]
L I2s48.5 [2]
L II2p1/221.7 [2]
L III2p3/221.6 [2]

Notes

I am grateful to Gwyn Williams (Jefferson Laboratory, Virginia, USA) who provided the electron binding energy data. The data are adapted from references 1-3. They are tabulated elsewhere on the WWW (reference 4) and in paper form (reference 5).

References

  1. J. A. Bearden and A. F. Burr, "Reevaluation of X-Ray Atomic Energy Levels," Rev. Mod. Phys., 1967, 39, 125.
  2. M. Cardona and L. Ley, Eds., Photoemission in Solids I: General Principles (Springer-Verlag, Berlin) with additional corrections, 1978.
  3. Gwyn Williams WWW table of values
  4. D.R. Lide, (Ed.) in Chemical Rubber Company handbook of chemistry and physics, CRC Press, Boca Raton, Florida, USA, 81st edition, 2000.
  5. J. C. Fuggle and N. Mårtensson, "Core-Level Binding Energies in Metals," J. Electron Spectrosc. Relat. Phenom., 1980, 21, 275.