Question

Energy value which is equal to mass of one electron in ergs

Answer 1

Mass of one electron = 9.1091 x 10^-31 kg

According to the Einstein's theory of relativity

Mass and energy are interchangeable...

So,

9.1091 x 10^-31 kg = 0.511 Me

1 MeV= 1.602 × 10-6 erg

So, 0.511 MeV = 8.187 × 10-7 erg

THUS,

Mass of one electron = 8.187 × 10-7