Question:
Which one of the following cyano complexes would exhibit the lowest value of paramagnetic behaviour?
(At. Nos.: Cr = 24, Mn = 25, Fe = 26, Co = 27)
Which one of the following cyano complexes would exhibit the lowest value of paramagnetic behaviour?
(At. Nos.: Cr = 24, Mn = 25, Fe = 26, Co = 27)
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Strong field ligands reduce number of unpaired electrons.
Updated On: Mar 20, 2026
- \([\text{Co(CN)}_6]^{3-}\)
- \([\text{Fe(CN)}_6]^{3-}\)
- \([\text{Mn(CN)}_6]^{3-}\)
- [Cr(CN)₆]³-
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The Correct Option is A
Solution and Explanation
Step 1: CN⁻ is a strong field ligand → low spin complexes.
Step 2: [Co(CN)₆]³- has all electrons paired.
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