Question

In which of the following pairs, both molecules possess dipole moment?

• A. \( CO_2, BCl_3 \)
• B. \( BCl_3, NF_3 \)
• C. \( CO_2, SO_2 \)
• D. \( SO_2, NF_3 \)

Hint:

Molecules with symmetric geometry (linear, trigonal planar) usually have zero dipole moment.

Answer 1

The Correct Option is D

Step 1: Identify Molecular Geometry and Dipole Moments
- \( CO_2 \) and \( BCl_3 \) are symmetric → No dipole moment.
- \( SO_2 \) (bent) and \( NF_3 \) (pyramidal) → Have dipole moment. Step 2: Correct Pair \[ SO_2, NF_3 \]