An electron volt (eV) is a unit of energy, and it's defined as the energy gained by an electron when it moves through a potential difference of one volt.
To convert electron volts (eV) to joules (J), we use the following conversion factor:
1 eV = 1.602 × 10^(-19) J
This conversion factor is based on the elementary charge of an electron, which is approximately 1.602 × 10^(-19) coulombs.
So, in the given question:
1.6 × 10^(-19) J
is indeed the correct answer, as it's equivalent to approximately 1 electron volt (eV).