Difference between revisions of "Electronvolt"
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In chemistry, it is often useful to express the electronvolt as a [[molar quantity]], whose value in SI units is determined by the measured value of the [[Faraday constant]]. The 2006 CODATA recommended value is 1 eV = {{nowrap|96.485 3399(24) kJ mol<sup>−1</sup>}}. | In chemistry, it is often useful to express the electronvolt as a [[molar quantity]], whose value in SI units is determined by the measured value of the [[Faraday constant]]. The 2006 CODATA recommended value is 1 eV = {{nowrap|96.485 3399(24) kJ mol<sup>−1</sup>}}. | ||
| − | In particle physics, it is also used as a unit of mass. | + | In particle physics, it is also used as a unit of [[mass]]. |
==References== | ==References== | ||
{{reflist}} | {{reflist}} | ||
| + | [[Category:Units used with the SI]] | ||
[[Category:Units of energy]] | [[Category:Units of energy]] | ||
[[Category:Units of mass]] | [[Category:Units of mass]] | ||
{{CC-BY-3.0}} | {{CC-BY-3.0}} | ||
Revision as of 09:34, 15 March 2010
The electronvolt (symbol: eV) is a non-SI unit of energy. It is defined as the kinetic energy gained by an electron on being accelerated through a potential difference of one volt: as such, its value in SI units is determined by the measured value of the elementary charge. The 2006 CODATA recommended value is 1 eV = 1.602 176 487(40) × 10−19 J.[1]
In chemistry, it is often useful to express the electronvolt as a molar quantity, whose value in SI units is determined by the measured value of the Faraday constant. The 2006 CODATA recommended value is 1 eV = 96.485 3399(24) kJ mol−1.
In particle physics, it is also used as a unit of mass.
References
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