XVII. Which of the following compounds have zero dipole moment(a) cis-

1.	XVII. Which of the following compounds have zero dipole moment(a) cis-1,2-dibromoethylene(m) 1,1- dibromoethylene(b) trans-1,2-dibromoethylene(d) All of these
Answer» Answer: trans - 1,2 - dibromoethylene Explanation: The dipole moment vectors between C and Br in trans structures face in OPPOSITE directions and thus cancel each other.

XVII. Which of the following compounds have zero dipole moment(a) cis-1,2-dibromoethylene(m) 1,1- dibromoethylene(b) trans-1,2-dibromoethylene(d) All of these

Answer»

Answer:

trans - 1,2 - dibromoethylene

Explanation:

The dipole moment vectors between C and Br in trans structures face in OPPOSITE directions and thus cancel each other.