Question

Interparticle force are weakest in
(A)
Kerosene oil
(B)

Water
(C)
Dry ice
(D)
Carbon dioxide​

Answer 1

Answer:

(c)dry ice

Explanation:

Molecular solids are held together by intermolecular forces—dispersion forces, dipole–dipole forces, and hydrogen bonding. Ice is held together by hydrogen bonds, and dry ice is held together by dispersion forces.

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Answer 2

Answer:

The correct answer is option (C) Dry ice.

Explanation:

• Intermolecular force is the force of attraction between the molecules of a certain substance.
• Intermolecular forces such as hydrogen bonds, dipole-dipole forces, and dispersion forces keep molecular solids in place.
• Dry ice is held together by dispersion forces while ice is bound together by hydrogen bonds.
• Due to the non-polar nature of dry ice and its zero dipole moment, attractive intermolecular van der Waals forces are present.
• Because of the relative weakness of these intermolecular interactions, molecular solids have low melting points. They lack conductivity as well.

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