Question

Statement 1: Ions with more than five $3d$ electrons have usually slightly larger magnetic moment than calculated on the basis of $\mu =\sqrt{n(n+2)}$
Statement 2: The maximum number of unpaired $d$-electrons is five as in $M{n}^{2+}$ and $F{e}^{3+}$ and so, $\mu =$ $5.92$ for $5$ unpaired electrons

• A. Statement 1 is True, Statement 2 is True; Statement 2 is correct explanation for Statement 1
• B. Statement 1 is True, Statement 2 is True; Statement 2 is not correct explanation for Statement 1
• C. Statement 1 is True, Statement 2 is False
• D. Statement 1 is False, Statement 2 is True

Answer 1

Answer: (B)

The slightly larger value of $\mu$ than expected from the formula $\mu =\sqrt{n(n+2)}$ is due to a small contribution from the orbital anguler momentum of the electrons to the magnetic moment