Question

Tertiary amines have the lowest boiling points because ,

• A. They possess polar N-C bonds
• B. They possess inter-molecular dipole-dipole attraction forces.
• C. They possess inter-molecular H-bonding
• D. They do not possess inter-molecular H- bonding

Hint:

Tertiary amines have no N-H bond, so they cannot hydrogen bond with each other.

Answer 1

The Correct Option is D

Step 1: Compare
Boiling point order: primary > secondary > tertiary for isomeric amines, following hydrogen bonding strength.

Step 2: Answer
Option (D).

Final Answer:
No intermolecular H-bonding. \[ \boxed{\text{(D)}\ \text{They do not possess inter-molecular H-bonding}} \]