- Symbol
- eV
- Value
- 1.602 176 634 × 10−19
- Unit
- J
- Uncertainty
- exact (by definition)
- Copy-ready
1.602176634e-19
The energy an electron gains crossing a potential difference of one volt; numerically identical to e because it is defined from it.
NIST, Fundamental Physical Constants — Complete Listing (2022 CODATA adjustment), retrieved 2026-07-26.
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