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Coordination Compounds — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryCoordination Compounds3 Marks
Question
Why do compounds having similar geometry have different magnetic moment?
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Answer

The compounds having similar geometry may have different number of unpaired electrons due to the presence of weak and strong field ligands in complexes. If CFSE is high, the complex will show low value of magnetic moment and if CFSE is low, the complex will show high value of magnetic moment. For example, the $\left[\mathrm{CoF}_6\right]^3$ is paramagnetic moment. For example, the $\left[\mathrm{COF}_6\right]^3$ is paramagnetic but $\left[\mathrm{Co}\left(\mathrm{NH}_3\right)_6\right]^{3+}$ is diamagnetic.

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