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QJEEM22Ch1737: JEE Main 2022 Chemistry - Class 12 JEEM22Ch1737 Solution: The difference between spin only magnetic moment values of and…

The difference between spin only magnetic moment values of [Co(H2O)6]Cl2\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]\mathrm{Cl}_{2} and [Cr(H2O)6]Cl3\left[\mathrm{Cr}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right] \mathrm{Cl}_{3} is ___________.

Step-by-Step Verified Solution

Co→4s23d7\mathrm{Co} \rightarrow 4 s^{2} 3 d^{7}

H2O\mathrm{H}_{2} \mathrm{O} is weak field ligand.

Co+2→3d7\mathrm{Co}^{+2} \rightarrow 3 d^{7}

n=3μ1amp;=n(n+2)amp;=15 B.M. \begin{aligned}\mathrm{n}=3 \quad \mu_{1} &=\sqrt{n(\mathrm{n}+2)} \\&=\sqrt{15} \text { B.M. }\end{aligned}

Cr→4s13d5\mathrm{Cr} \rightarrow 4 s^{1} 3 d^{5}

Co+3→3d3\mathrm{Co}^{+3} \rightarrow 3 d^{3}

n=3μ2=15\mathrm{n}=3 \quad \mu_{2}=\sqrt{15} B.M.

μ1−μ2=0\mu_{1}-\mu_{2}=0

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