The magnetic moments of following,arranged in decreasing order will be :-

$(i)$ $Co^{3+}$ (Octahedral complex with a strong field ligand)

$(ii)$ $Co^{3+}$  (Octahedral complex with a weak field ligand like $F^-$ )

$(iii)$ $Co^{2+}$  (Tetrahedral complex)

$(iv)$ $Co^{2+}$ (Square planar complex)

  • A

    $i>ii>iii>iv$

  • B

    $iii>ii>iv>i$

  • C

    $ii>iii>iv>i$

  • D

    $ii>iv>iii>i$

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