The complex that has the highest crystal splitting energy $(Δ)$ , is:

K_{3} [C o (C N)_{6}]

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[C o (N H_{3})_{2} (H_{2} O)] C l_{3}

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[C o (N H_{3})_{3} (H_{2} O)] C l_{3}

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[C o (N H_{3})_{5} C l] C l_{2}

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Solution

The correct option is A $K_{3} [C o (C N)_{6}]$
Crystal Field Theory -
According to this theory, metal and ligand are considered as point charges. This theory deals with electrostatic force of attraction means the talks about the ionic character of M-L bond.

As complex $K_{3} [C o (C N)_{6}]$ have $C N^{-}$ ligand which is strongfield ligand amongst the given ligand in other complexes.

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Similar questions

Arrange the following complexes in the increasing order of conductivity of their solution

$[C o (N H_{3})_{3} C l_{3}], [C o (N H_{3})_{4} C l_{2}] C l, [C o (N H_{3})_{6}] C l_{3}, [C o (N H_{3})_{5} C l] C l_{2}$

Q. Among

(i) [C o (N H_{3})_{5}] C l_{3}, (i i) [N i (N H_{3})_{5}] C l_{2}, (i i i) [C r (H_{2} O)_{6}] C l_{3}, (i v) [F e (H_{2} O)_{6}] C l_{2}

the complex which is diamagnetic is :

Q. Among the following, which complex compound is diamagnetic?

[C o (N H_{3})_{6}] C l_{3}

,
ii)

[N i (N H_{3})_{6}] C l_{2}

,
iii)

[C r (H_{2} O)_{6}] C l_{3}

,
iv)

[F e (H_{2} O)_{6}] C l_{2}

Q. The correct order of the following complexes according to increasing conductivity of their solutions will be:
(i)

[C o (N H_{3})_{3} C l_{3}]

(ii)

[C o (N H_{3})_{4} C l_{2}] C l

(iii)

[C o (N H_{3})_{6}] C l_{3}

(iv)

[C o (N H_{3})_{5} C l] C l_{2}

Q. The crystal field stabilisation energy of

[C o (N H_{3})_{6}] C l_{3}

is :

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The complex that has the highest crystal splitting energy (Δ), is:

The complex that has the highest crystal splitting energy $(Δ)$ , is: