Question

Match List-I with List-II:

List-I (Type of Crystalline Solid)	List-II (Example)
(A) Ionic	(III) Sodium Chloride, NaCl
(B) Covalent	(IV) Diamond, C
(C) Molecular	(I) Methane, CH4
(D) Metallic	(II) Copper, Cu

Choose the correct answer from the options given below:

• (A) - (III), (B) - (II), (C) - (I), (D) - (IV).
• (A) - (III), (B) - (I), (C) - (II), (D) - (IV).
• (A) - (II), (B) - (I), (C) - (IV), (D) - (III).
• (A) - (III), (B) - (IV), (C) - (I), (D) - (II).

Hint:

Ionic solids are held together with strong electrostatic attractions, covalent solids have a network of covalent bonds, molecular solids are held together by weak intermolecular forces, while metallic solids have metallic bonds through a sea of delocalized electrons.

Answer 1

The Correct Option is D

Crystalline solids are categorized by their bonding:
• Ionic solids: are held by electrostatic forces (NaCl).
• Covalent solids: have covalent network bonds (Diamond, C).
• Molecular solids: held by weak forces (Methane, CH4).
• Metallic solids: have delocalized electrons(Copper, Cu).
The correct answer is: (A) - (III), (B) - (IV), (C) - (I), (D) - (II)