Option D

An electron volt (symbolized as $\text{eV}$) is a unit of energy.

Definition:
One electron volt is defined as the amount of kinetic energy gained or lost by an electron when it is accelerated through an electric potential difference of one volt.

Mathematical Relation:
$\text{Work done (Energy)} = q \times V$

For an electron ($q = e = 1.602 \times 10^{-19}\text{ C}$) accelerated through a potential difference $V = 1\text{ V}$:
$$1\text{ eV} = (1.602 \times 10^{-19}\text{ C}) \times (1\text{ V}) = 1.602 \times 10^{-19}\text{ Joules}$$
Since Joule is a unit of energy, the electron volt is also a unit of energy commonly used in atomic, nuclear, and particle physics.

Therefore, the correct option is Option D.