Question

True or false. The electron and the proton have the same mass

Answer 1

False.
electron mass = 9.10938291 × 10-31 kilograms
proton mass = 1.67262178 × 10-27 kilograms

Answer 2

Think of the electron as an elementary particle. A proton is much more massive because it contains three quarks in which the quarks are thought to be elementary particles. The proton ends up being more massive than the electron, but the proton and electron have the same magnitude of charge just opposite sign.