Question

Which of the following molecule has highest dipole moment ?

• A. $H_2S$
• B. $CO_2$
• C. $CCl_4$
• D. $BF_3$

Answer 1

Answer: (A)

$H_2S$

Answer 2

Presence of two lone pairs on the sulphur atom, makes the geometry of $H_2S$ molecule, irregular. While all the other molecules exhibit regular geometry and zero dipole moment.