Electron mass

Constant Value
me 9.1093837139(28)×10−31 kg‍
5.485799090441(97)×10−4 Da‍
0.51099895069(16) MeV/c2
mec2 8.1871057880(26)×10−14 J‍
0.51099895069(16) MeV‍

In particle physics, the electron mass (symbol: me) is the mass of a stationary electron, also known as the invariant mass of the electron. It is one of the fundamental constants of physics. It has a value of about 9.109×10−31 kilograms or about 5.486×10−4 daltons, which has an energy-equivalent of about 8.187×10−14 joules or about 0.5110 MeV.

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