The number of water molecule(s) not coordinated to copper ion directly in $\mathrm{CuSO}_{4} \cdot 5 \mathrm{H}_{2} \mathrm{O}$, is:

JEE Main · 2019 · 09 Apr 2019 · Shift 1 · Coordination Compounds

The number of water molecule(s) not coordinated to copper ion directly in

CuSO_{4} \cdot 5 H_{2} O

, is:

(A)1✓ Correct
(B)3
(C)2
(D)4

Answer: (A)

Solution

CuSO X_{4} \cdot 5 H X_{2} O

the copper ion holds four water molecules directly, in a square-planar set, while the fifth water is not bonded to copper at all but hydrogen-bonded between the sulphate and the coordinated waters. So the number of water molecules not attached directly to copper is one.

JEE Main · 2019 · 09 Apr 2019 · Shift 1 · Single correct option

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