Which of the following is a kind of crystalline solid and its example?
i. Molecular solid; graphiteii. Covalent network solid; naphthalene
iii. Metallic solid; iron
iv. Ionic solid; cesium bromide
v. Dipole solid; ice

• A. i, ii
• B. ii, iii
• C. iii, iv
• D. iv, v
• E. v, i

Answer: (C)