Question

Which one of the following has unit positive charge and 1 amu mass?

• A. Electron
• B. Neutron
• C. Proton
• D. None of these

Answer 1

Answer: (C)

The proton has unit positive charge $(+1.602\times {10}^{-19}coulombs)$ and its mass is $1.007\text{ amu (}1.677\times {10}^{-27}kg\text{)}.$