Question

Which of the following molecules has "NON ZERO" dipole moment value? 

(1) \(CCl_4 \)

(2) HI 

(3) \(CO_2 \)

(4) \(BF_3\)

Answer 1

Correct option is (2) HI 

Dipole moment of a molecule depends both on shape and bond dipole.

Molecule	Shape	\(\mu\)(Debye)
\(CCl_4\)		0
HI	H - I	0.38
\(CO_2\)	O = C = O	0
\(BF_3\)		0