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Question

In which of the following, all four types of bonds i.e. ionic, covalent, dative, and hydrogen bonds are present?

A
Ice
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B
BeSO4.4H2O
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C
CuSO4.5H2O
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D
BaCl2.2H2O
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Solution

The correct option is D CuSO4.5H2O
CuSO45H2O exists as [Cu(H2O)4]2+SO24H2O.

It has dative bonds in [Cu(H2O)4]2+, which is between water molecules and Cu. There is an ionic bond between the coordination sphere and SO24 ion.

The covalent bond between S and O in SO24 ions and between H and O in water molecules. Within the molecules of H2O, there is hydrogen bonding.

Hence, option C is correct.

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