|
|
| Atomic properties |
|---|
| Atomic number |
10 |
|---|
| Standard atomic weight |
20.1797(6) |
|---|
| Electron configuration |
[He] 2s2 2p6 |
|---|
| Physical properties[1][2] |
|---|
| Melting point |
24.56 K (−248.59 °C) |
|---|
| Boiling point |
27.07 K (−246.08 °C) |
|---|
| Triple point |
24.56 K, 0.4337 bar |
|---|
| Critical point |
44.4 K, 27.56 bar |
|---|
| Density |
0.853 kg m−3 (1 atm, 15 °C)
1.207 g cm−3 (l, 85.2 K) |
|---|
| Ionization energies [3][4] |
|---|
| 1st |
21.564 539(7) eV,
2080.6619(7) kJ mol−1 |
|---|
| 2nd |
40.962 eV,
3952.2 kJ mol−1 |
|---|
| 3rd |
63.45 eV,
6122 kJ mol−1 |
|---|
| 4th |
97.11 eV,
9370 kJ mol−1 |
|---|
| 5th |
126.21 eV,
12177 kJ mol−1 |
|---|
| 6th |
157.93 eV
15238 kJ mol−1 |
|---|
| 7th |
207.27 eV,
19999 kJ mol−1 |
|---|
| 8th |
239.09 eV,
23069 kJ mol−1 |
|---|
| Atomic radii [5] |
|---|
| Van der Waals radius |
154 pm |
|---|
| Thermodynamic properties [6][2] |
|---|
| Standard entropy |
146.328(3) J K−1 mol−1 |
|---|
| Enthalpy change of fusion |
0.335 kJ mol−1 |
|---|
| Enthalpy change of vaporization |
1.790 kJ mol−1 |
|---|
| Molar heat capacity (Cp) |
21 J K−1 mol−1 |
|---|
| Miscellaneous |
|---|
| CAS number |
7440-01-9 |
|---|
| EC number |
231-110-9 |
|---|
| Where appropriate, and unless otherwise stated, data are given for 100 kPa (1 bar) and 298.15 K (25 °C). | |
|
Neon (symbol: Ne) is a noble gas.
Notes and references
Notes
References
- ↑ Neon. In NIST Chemistry WebBook; National Institute for Standards and Technology, <http://webbook.nist.gov/cgi/inchi/InChI%3D1S/Ne>. (accessed 13 April 2011).
- ↑ 2.0 2.1 Neon. In Gas Encyclopedia; Air Liquide, <http://encyclopedia.airliquide.com/encyclopedia.asp?GasID=46>. (accessed 13 April).
- ↑ Kaufman, Victor; Minnhagen, Lennart Accurate Ground-Term Combinations in Ne I. J. Opt. Soc. Am. 1972, 62 (1), 92–95. DOI: 10.1364/JOSA.62.000092.
- ↑ Moore, Charlotte E. Ionization potentials and ionization limits derived from the analyses of optical spectra. Natl. Stand. Ref. Data Ser., (U.S. Natl. Bur. Stand.) 1970, 34, 1–22, <http://www.nist.gov/data/nsrds/NSRDS-NBS34.pdf>.
- ↑ Bondi, A. van der Waals Volumes and Radii. J. Phys. Chem. 1964, 68 (3), 441–51. DOI: 10.1021/j100785a001.
- ↑ Cox, J. D.; Wagman, D. D.; Medvedev, V. A. CODATA Key Values for Thermodynamics; Hemisphere: New York, 1989. ISBN 0891167587, <http://www.codata.org/resources/databases/key1.html>.
External links
