An electron- volt is
A)the energy jump between the first and second energy levels of hydrogen.
B)an amount of energy much smaller than a joule.
C)the energy of one electron.
D)the charge of one electron.
E)an amount of energy much larger than a joule.

Question

Quizplus · Accepted Answer

An electron-volt (eV) is the amount of energy gained by an electron when it is accelerated through a potential difference of one volt. It is a very small amount of energy, equivalent to 1.6 x 10^-19 joules. The other options are not correct because the energy jump between the first and second energy levels of hydrogen is 10.2 eV (A), an eV is not the energy of one electron (C) nor the charge of one electron (D), and it is not a large amount of energy (E).

An Electron- Volt Is