The mass of an electron is approximately 2000 times the mass of a proton.
Mass of the electron is approximately 1837 times that of the proton.
The mass of an electron is approximately 1/2000 times that of a/an :
Mass of an electron is approximately 1/1837 times that of mass of proton. True or False.
Mass of a proton is __ times the mass of an electron.