Calculate the square of the spin-only magnetic moment () in for the complex ion . — Coordination Compounds Chemistry Question

💡 Solution & Explanation

$Mn^{2+}$ is $3d^5$. $Cl^-$ is a weak field ligand, giving an $sp^3$ tetrahedral complex. All 5 electrons are unpaired. $\mu = \sqrt{5(7)} = \sqrt{35}$. Wait, $\mu^2 = 35$. Let's re-read option D. Answer is 35 [40].