What is the rest mass of a proton?

Question

What is the rest mass of a proton?

Answer 1

Actually, the mass of a proton is 1.00727664669 atomic mass units.



An atomic mass unit is defined such that Carbon 12 is exactly 12. The carbon atom weighs less than 12 times the proton (because of nuclear binding energy).

Answer 2

The rest mass of a proton is 1 amu or 1.66054 x 10-27 kg.

Answer 3

I think it would be the same as the mass of a Hydrogen about 1amu. A hydrogen is basicly a proton and a electron that is so small it won't factor in