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MCQMediumJEE Main 2025 · 29 January, Shift 1Crystal Field Theory

Chemistry Question from JEE Main 2025 · 29 January, Shift 1

The correct increasing order of stability of the complexes based on Δo\Delta_o value is:

(I) [Mn(CN)6]3−[\text{Mn(CN)}_6]^{3-}    (II) [Co(CN)6]4−[\text{Co(CN)}_6]^{4-} (III) [Fe(CN)6]4−[\text{Fe(CN)}_6]^{4-}    (IV) [Fe(CN)6]3−[\text{Fe(CN)}_6]^{3-}

  • A

    IV<III<II<I\text{IV} < \text{III} < \text{II} < \text{I}

  • B

    I<II<IV<III\text{I} < \text{II} < \text{IV} < \text{III}

  • C

    III<II<IV<I\text{III} < \text{II} < \text{IV} < \text{I}

  • D

    II<III<I<IV\text{II} < \text{III} < \text{I} < \text{IV}

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