Question

What is meant by electron-volt? It is equivalent to how many joules?

Answer 1

Electron Volt

1. The energy released in the nuclear reactions is expressed in electron volts.
2. The symbol of the unit of electron volt is eV.
3. The energy calculations in the nuclear reaction are calculated using Einstein's mass-energy equivalence relation.

Conversion Electron Volt to Joules

1. One electrons volt equals to $1.602\times {10}^{-19}\text{joules}$.
2. $\therefore 1{\text{eV = 1.602×10}}^{-19}\text{joules}$.