Question

Which of the following option is having maximum number of unpaired electron?

• A. $\text{A tetrahedral}{d}^6\text{ion}$
• B. $\left[Co\right(H_{2}O{)}_6{]}^{3+}$
• C. $\text{A square planar}{d}^7\text{ion}$
• D. $\text{A coordinator compound with magnetic moment of 5.92 B.M.}$

Answer 1

The correct option is D $\text{A coordinator compound with magnetic moment of 5.92 B.M.}$

Spin only magnetic moment $\mu =\sqrt{5\times 7}B.M.=\sqrt{35}B.M$
$\mu =5.92BM$
Maximum unpaired electrons possible are five.