A) Electron
B) Neutron
C) Proton
D) None of these
Correct Answer: C
Solution :
The proton has unit positive charge \[(+1.602\,\times \,{{10}^{-19}}\,coulombs)\] and its mass is \[1.007\text{ amu (}1.677\times {{10}^{-27}}\text{ }kg\text{)}.\]
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