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

💡 Solution & Explanation

$Mn^{2+}$ has a $3d^5$ configuration. $Cl^-$ is a weak field ligand, so the complex is tetrahedral ($sp^3$) and no pairing occurs. Number of unpaired electrons $n = 5$. $\mu = \sqrt{5(5+2)} = \sqrt{35} \approx 5.92 \text{ BM}$.