Question

The charge in coulombs on $N^{3-}$ ion is:

• A. $4.80\times {10}^{-19}$ C
• B. $1.60\times {10}^{-19}$ C
• C. $-3$ C
• D. $1.8\times {10}^{-24}$ C

Answer 1

The correct option is A $4.80\times {10}^{-19}$ C

Charge on one electron $=1.6\times {10}^{-19}C$

$N^{3-}$ has $-3$ charge on it.

Charge on three electron $=3\times 1.6\times {10}^{-19}C=4.8\times {10}^{-19}C$