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Question

Match the column:
ColumnI ColumnII(a)[Ag(NH3)2]+(p)Octahedral(b)[Cu(NH3)4]2+(q)Tetrahedral(c)[Cr(H2O)6]2+(r)Trigonal bipyramidal(d)[Fe(CO)5](s)Square planar (t)Linear


A

(a) → t; (b) → s; (c) → r; (d) → p.

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B

(a) → t; (b) → q; (c) → r; (d) → s.

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C

(a) → t; (b) → q ; (c) → s; (d) → r.

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D

(a) → t; (b) → s; (c) → p; (d) → r.

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Solution

The correct option is D

(a) → t; (b) → s; (c) → p; (d) → r.


Use CFT (or even VBT would suffice):

FeCO5

This above is the simplest of all, except maybe that [Ag(NH3)2]+ is linear!

The only complex with 6 ligands is the [Cr(H2O)6]2+ - which is clearly octahedral.

Cu2+ is 3d9 and thus has to be square planar! There are no tetrahedral complexes from the given 4.


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