The coordination numbers of $C o$ and $A l$ in $[C o C l (e n)] C l_{2}$ and $K_{3} [A l (C_{2} O_{4})]$ , respectively, are (en = ethane-1, 2-diamine):

5 and 3

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3 and 3

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6 and 6

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5 and 6

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Solution

The correct option is D $5 and 6$
The coordination numbers of $C o$ and $A l$ in $[C o (C l) (e n)] C l_{2}$ and $K_{3} [A l (C_{2} O_{4})_{3}]$ are $5$ and $6$ respectively. In first complex, $‘ e n^{'}$ is a didentate ligand and $‘ C l^{'}$ is a unidentate ligand.
$[C o (C l) (e n)] C l_{2}$ , coordination number $= 1 + 2 \times 2 = 1 + 4 = 5$ . So, the coordination number is $5$ .
For $K_{3} [A l (C_{2} O_{4})_{3}]$ , $C_{2} O_{4}^{2 -}$ , is a didentate ligand.

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Similar questions

F e

C o

[F e (C_{2} O_{4})_{3}]^{3 -} a n d [C o (e n)_{3}]^{3 +}

C_{2} O_{4}^{2 -}

[M (e n)_{2} (C_{2} O_{4})] N O_{2}

{

1, 2

}

[C o (e n)_{2} C l_{2}]^{+} (e n = e t h a n e - 1, 2 - d i a m i n e)

[C r (C_{2} O_{4})_{3}]^{3 -}

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

C r = 24, C o = 27

E

[E (e n)_{2} (C_{2} O_{4})] N O_{2}

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