Match the following columns :
Colwnn-1 Colwnn-II
(a) ${NH}_{4} Cl$ (p) Hydrogen bond
(b) ${CuSO}_{4} \cdot 5 H_{2} O$ (q) Co-ordlnate bond
(c) $HNC$ (r) Ionic bond
(d) liquid $H_{2} O_{2}$ (s) Covalent bond

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(a-s, q, s); (b-p, s, r, s); (c-q, s); (d-p, s)

(a-q, r, s); (b-p, q, r, s); (c-r, q); (d-q, r)

(a-q, r, s); (b-s, q, r, p); (c-q, s); (d-s, p)

(a-q, r, s); (b-p, q, r, s); (c-q, s); (d-p, s)

answer is A.

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Detailed Solution

An ionic bond is formed between the ${NH}_{4} Cl$ ions in an ${NH}_{4} Cl$ molecule, three covalent bonds are formed between the N and three H atoms, and one coordinate bond is formed between the N and one H atom.
The solid-state structure of ${CuSO}_{4} \cdot 5 H_{2} O$ is depicted above. ${Cu}^{2 +}$ ions are attracted to SO 4 2 ions not only by ionic interactions (electrovalent), but also by coordinate covalent bonds.

Cu 2+ ions form coordinate covalent bonds with water and sulphate ions. Water and sulphate ions both have covalent bonds.

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