Q. The magnetic moment of $\left\lbrack Co\left( {NH}_{3} \right)_{6} \right\rbrack{Cl}_{3}$ is
A) 1.73
B) 2.83
C) 6.6
D) Zero
Explanation
(d)
In $\left\lbrack Co\left( NH_{3} \right)_{6} \right\rbrack^{3 +}$ the oxidation state of Co is +3.
$$
$\left\lbrack Co\left( NH_{3} \right)_{6} \right\rbrack^{3 +}$ does not contain unpaired electron hence, its magnetic moment is zero.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.