The mass of an electron:
A) is almost the same as that of a neutron
B) is negative
C) equals that of a proton
D) is zero if the electron is at rest
E) is much less than that of a proton

Question

Quizplus · Accepted Answer

The mass of an electron is much less than that of a proton. The mass of an electron is approximately 9.109 x 10^-31 kg, while the mass of a proton is approximately 1.673 x 10^-27 kg. As a result, the mass of an electron is about 1/1836th that of a proton.

The Mass of an Electron