Question

For which of the following molecule significant $\mu \ne 0$?

(a) (b)

(c) (d)

• A. Only (c)
• B. (c) and (d)
• C. Only (a)
• D. (a) and (b)

Answer 1

The correct option is B

(c) and (d)

Due to infinite possible conformations in the above cases (of which only one has zero $\mu$); a weighted $\mu$ will finally exist.