Kg is the SI unit for mass.
Electron has a mass of about 9.10938215 × 10−31 kg.
1.66 X 10 -27 kg (mass of proton)/9.109 X 10 -31 kg (mass of an electron) = 1822 ----------------------the mass of a proton is almost 2000 times the mass of an electron
The mass of one electron is about 9.11E-31 kg. That's 0.000000000000000000000000000000911 kg. 911 billionths of a trillionth of a trillionth kg.
9.109382x10^-31 kg
1.66 X 10 -27 kg (mass of proton/neutron)/9.109 X 10 -31 kg ( mass of electron) = 1822 times greater ===============
The mass of an electron is 9.107 x 10-31 kg.
Electrons dosn't have a mass number. The mass of the electron is 9,10938291(40)×10−31 kg.
9.1*10^(-31)kg
The mass of electron in kg is 9,10938356(11)×10−31
proton mass = 1.6726 × 10-27 kg electron mass = 9.109 × 10-31 kg neutron mass = 1.6749 x 10-27 kg
1.66 X 10 -27 kg (mass of proton/neutron)/9.109 X 10 -31 kg ( mass of electron) = 1822 times greater ===============
The mass of an electron is 9.12 x 10-31 kg