Question

The relative charges on an electron, a proton and a neutron respectively are:

• A. $+1,+1,0$
• B. $-1,+1,0$
• C. $-1,0,+1$
• D. $0,+1,-1$

Answer 1

The correct option is B $-1,+1,0$

An electron has an absolute charge of $-1.602\times {10}^{-19}\text{C}$ and a proton has a charge of $+1.602\times {10}^{-19}\text{C}$ and a neutron has no charge.
So, the relative charge on an electron, proton and a neutron respectively are $-1,+1,0$.