Difference between revisions of "Ionization energy"
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The '''ionization energy''' (symbol: '''''E''<sub>i</sub>''') is the [[energy]] required to remove an [[electron]] from a neutral atom or molecule to form a positively charged [[ion]].<ref>{{GoldBookRef| title = ionization energy | file = I03199 | accessdate = 2010-07-16}}.</ref> '''Ionization potential''' is an older name for the same quantity. | The '''ionization energy''' (symbol: '''''E''<sub>i</sub>''') is the [[energy]] required to remove an [[electron]] from a neutral atom or molecule to form a positively charged [[ion]].<ref>{{GoldBookRef| title = ionization energy | file = I03199 | accessdate = 2010-07-16}}.</ref> '''Ionization potential''' is an older name for the same quantity. | ||
| − | For both historical and technical reasons, ionization energies are often quoted in [[electronvolt]]s; for chemical purposes, it is often more convenient to use molar ionization energies expressed in {{nowrap|kJ mol<sup>−1</sup>. | + | For both historical and technical reasons, ionization energies are often quoted in [[electronvolt]]s; for chemical purposes, it is often more convenient to use molar ionization energies expressed in {{nowrap|kJ mol<sup>−1</sup>}}. |
==References== | ==References== | ||
Revision as of 09:23, 31 August 2010
The ionization energy (symbol: Ei) is the energy required to remove an electron from a neutral atom or molecule to form a positively charged ion.[1] Ionization potential is an older name for the same quantity.
For both historical and technical reasons, ionization energies are often quoted in electronvolts; for chemical purposes, it is often more convenient to use molar ionization energies expressed in kJ mol−1.
References
- ↑ ionization energy, <http://goldbook.iupac.org/I03199.html> (accessed 16 July 2010), Compendium of Chemical Terminology Internet edition; International Union of Pure and Applied Chemistry (IUPAC).
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