Question

Which of the following would have a permanent dipole moment ?

• A. $BF_3$
• B. $SiF_4$
• C. $SF_4$
• D. $XeF_4$

Answer 1

Answer: (C)

$SF_4$

Answer 2

Out of the given four molecules only $SF_4$ is not symmetrical. As such it will have a permanent dipole moment