Question

Statement 1: The magnetic moment of $Mg$-atom is more than $K$-atom as the former has two electrons in outermost shell.
Statement 2: The magnetic moment of $N$-atom is more than magnetic moment of $O$-atom and former has more number of unpaired electrons

• A. If both Statement $1$ and Statement $2$ are true and the statement $2$ is the correct explanation of the statement $1$.
• B. If both Statement $1$ and Statement $2$ are true but statement $2$ is not the correct explanation of the statement $1$.
• C. If Statement $1$ is true but Statement $2$ is false.
• D. If Statement $1$ is false but Statement $2$ is true

Answer 1

Answer: (D)

Magnetic moment depends upon number of unpaired electrons and can be calculated as $\mu =\sqrt{n\left(n+2\right)}B.M,$
where $n$ is no. of unpaired electrons

	Valence electron	Unpaired electron
K	1	1
Mg	2	0
N	3	3
O	4	2