A proton has the greater mass; an electron has the greater speed (typically), but not the greater mass or charge magnitude.

Quick Scoop

  • A proton is about 1,836 times more massive than an electron, so in terms of “which has the greater mass,” the proton wins easily.
  • The magnitude of electric charge is the same for both: the proton is +1+1+1 and the electron is −1-1−1, equal in size but opposite in sign.
  • Because electrons are so light, they contribute almost nothing to an atom’s total mass, while protons (with neutrons) account for nearly all of it.

So, if the question is “which has the greater mass, a proton or an electron?”, the answer is: the proton by a huge factor.

Information gathered from public forums or data available on the internet and portrayed here.