Which is correct statement? As the s-character of a hybrid orbital decreases : (I) The bond angle decreases (II) The bond strength increases (III) The bond length increases (IV) Size of orbitals incre

Question

Which is correct statement? As the s-character of a hybrid orbital decreases : (I) The bond angle decreases (II) The bond strength increases (III) The bond length increases (IV) Size of orbitals increases

Prashant Kotian · Accepted Answer

Correct answer: A. Step 1: Examine the bonding in [Cu(H2O)4]SO4 . H2O (blue vitriol). Step 2: Covalent bonds exist within the water molecules and the SO4^2- ion. Coordinate covalent bonds are formed between the copper ion and oxygen atoms of the four water molecules. Electrovalent (ionic) bonds exist between the complex cation [Cu(H2O)4]^2+ and the anion SO4^2-. Step 3: The fifth water molecule (water of crystallization) is linked to the complex via hydrogen bonding. Thus, [Cu(H2O)4]SO4 . H2O contains all four types of bonding, matching option (a).

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