Question

The e/m of protron is

Answer 1

Explanation:

Because protons are not fundamental particles, they possess a measurable size; the root mean square charge radius of a proton is about 0.84–0.87 fm (or 0.84×10−15 to 0.87×10−15 m).

Electric charge: +1 e; 1.602176634×10−19 C

Mass: 1.67262192369(51)×10−27 kg; 938.27208816(29) MeV/c2; 1.007276466621...

Electric dipole moment: < 5.4×10−24 e⋅cm

Charge radius: 0.8414(19) fm