Electrons dont have weight
Electrons weigh 9.109 382 15(45) × 10-31 kilograms (Kg), contractions contain apostrophes, and sentences end in periods. Thanks for playing.
If you wanted to be really pedantic, you would say that electrons have a mass of 9.109 382 15(45) × 10-31 kilograms. Weight is measured in Newtons, not kilograms as it is a measure of force (Weight = mass x acceleration due to gravity i.e F=ma)