Question

The magnitude of charge present on one azide ion in coulombs is:

• A. $96500$
• B. $4.8\times {10}^{19}$
• C. $4.8\times {10}^{-19}$
• D. $1.6\times {10}^{-19}$

Answer 1

Answer: (D)

$1.6\times {10}^{-19}$

The charge of one electron is $-1.602\times {10}^{-19}\text{C}$.

The azide ion $N_3^{-}$ has unit negative charge which is equal to the charge on one electron.

Hence, the magnitude of charge on one azide ion is equal to $1.602\times {10}^{-19}\text{C}$.

Option D is correct.