Argon
| Latin name | Argon |
| English name | Argon |
| chemical symbol | Ar |
| atomic number | 18 |
| relative atomic mass | 39,948 |
| period | 3 |
| group | VIII.A |
| classification | noble gases |
| discovery year | 1894 |
| discoverer | W. Ramsay, R. J. Rayleigh |
| melting point [°C] | -189,2 |
| boiling point [°C] | -185,7 |
| critical temperature [°C] | -86,28 |
| critical pressure [MPa] | 4,988 |
| density [g cm-3] | 0,0017824 |
| electronegativity [Pauling] | 3,9 |
| oxidation states | 0 |
| electron configuration | [Ne]3s2 3p6 |
| atomic radius [pm] | 71 |
| covalent radius [pm] | 97 |
| specific heat [J g-1K-1] | 0,52 |
| heat of fusion [kJ mol-1] | 1,188 |
| thermal conductivity [W m-1 K-1] | 0,01772 |
| 1. ionizing potential [eV] | 15,7596 |
| 2. ionizing potential [eV] | 27,629 |
| 3. ionizing potential [eV] | 40,74 |
| state at normal conditions | gas |
Resources
- EMSLEY, John. The Elements. Oxford: Clarendon Press, 1998. ISBN 9780198558187.
- LIDE, D. R. Handbook of Chemistry and Physics, 85th Ed. New York: CRC Press, 2005. ISBN 9780849304859.
- STWERTKA, Albert. A Guide to the Elements. Oxford: University Press, 2002. ISBN 0-19-515027-9.
- VIDEN, Ivan. Chemie ovzduší. 1. vyd. Praha: VŠCHT, 2005. ISBN 80-7080-571-4.
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