Indicate the complex ion which shows geometrical isomerism.
(a) $[C r (H_{2} O)_{4} C l_{2}]^{+}$
(b) $[P t (N H_{3})_{3} C l]$
(c) $[C o (N H_{3})_{6}]^{3 +}$
(d) $[C o (C N)_{5} (N C)]^{3 -}$

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Solution

$[C r (H_{2} O)_{4} C l_{2}]^{+}$ shows geometrical isomerism because it is a $M A_{4} B_{2}$ type coordination compound which contains two set of equivalent ligands, four $H_{2} O$ and 2Cl.
Hence, the possible geometrical isomers are

Hence, the correct choice is (a).

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Similar questions

(A) [P t (N H_{3})_{3} C l]^{+}

(B) [P t (N H_{3}) C l_{5}]^{-}

(C) [P t (N H_{3})_{2} C l (N O_{2})]

(D) [P t (N H_{3})_{4} C l B r]^{2 +}

{[C o {(N H_{3})}_{6}]}_{6}^{+ 2}

{[C o {(N H_{3})}_{6}]}_{6}^{+ 3} .

[C o (N H_{3})_{6}]^{2 +}

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

[C o (N H_{3})_{6}]^{2 +}

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