Q29 of 50 Page 124

Why are low spin tetrahedral complexes not formed?

For tetrahedral complexes, the crystal field splitting energy is too low. It is lower than pairing energy so, the pairing of electrons is not favoured and therefore the complexes cannot form low spin complexes.

∆t= ∆o


So, the tetrahedral complexes don’t form in low spin complexes.


More from this chapter

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27

Magnetic moment of [MnCl4]2– is 5.92 BM. Explain giving reason.

 28

On the basis of crystal field theory explain why Co(III) forms paramagnetic octahedral complex with weak field ligands whereas it forms diamagnetic octahedral complex with strong field ligands.

 30

Give the electronic configuration of the following complexes on the basis of

Crystal Field Splitting theory.


[CoF6]3–, [Fe(CN)6]4– and [Cu(NH3)6]2+.


 31

Explain why [Fe(H2O)6]3+ has magnetic moment value of 5.92 BM whereas

[Fe(CN)6]3– has a value of only 1.74 BM.