Mass of simple electron is:
9.1 x 10-31 kg
9.1 x 10-30 kg
1.66 x 10-31 kg
1.6 x 10-1 C Kg-1
9.1 x 10-31 C Kg-1
1.7588 x 1011 C Kg-1
6.62 x 10-34 C Kg-1