Question

The dipole moment of chlorobenzene is $1.73D$. The dipole moment of $p-dichlorobenzene$ is excepted to be:

• A. $3.46D$
• B. $0.00D$
• C. $1.73D$
• D. $1.00D$

Answer 1

Answer: (B)

$0.00D$

Dipole - moment of chlorobenzene is $1.73$D. The dipole moment of a molecule is determined by the electronegativity of elements in the molecule and the symmetry of the molecule. Because, p-dichlorobenzene i.e, $1,4-$dichlorobenzene is symmetrical, the molecule will have a zero dipole moment.