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 $1.007amu\left(1.677\times 10^{-27}kg\right)$