electron charge

https://doi.org/10.1351/goldbook.E01982
The negative @[email protected] which appears on the electron or univalent ions [ \(1.602\times 10^{-19}\) coulombs or \(4.803\times 10^{-10}\) electrostatic units (\(\mathrm{esu}\))].
Source:
PAC, 1990, 62, 2167. (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2186 [Terms] [Paper]