Question

Magnetic moment of $\left[Ag\right(CN{)}_2{]}^{-}$ is zero. How many unpaired electrons are present in the complex ion?

• A. $1$
• B. $2$
• C. $3$
• D. $0$

Answer 1

The correct option is D $0$

The expression for magnetic moment is $\sqrt{n(n+2)}$, where $n$ is the number of unpaired electrons.
Here, magnetic moment is zero (given). Therefore, the number of unpaired electrons is also zero.