# For which of the following molecules(s) has /have significant $\mu \ne 0$.

1. A

(iii) and (iv)

2. B

only (i)

3. C

(i) and (ii)

4. D

only (iii)

FREE Lve Classes, PDFs, Solved Questions, PYQ's, Mock Tests, Practice Tests, and Test Series!

+91

Verify OTP Code (required)

### Solution:

Assuming planar structure, hydroquinone has two conformations as shown in the following.

The structure (I) is expected to have zero dipole moment whereas the structure (II) is expected to have a dipole moment. This conclusion may be derived based on the vector addition of components of dipole moment. The above facts are also applicable to 1, 4-benzenedithiol (structure iv).

## Related content

Join Infinity Learn Regular Class Program!