Question

Which of the following compound(s) is/are non-polar?

• A. ${Cl}_2$
• B. ${CH}_2{Cl}_2$
• C. $CH{Cl}_3$
• D. $C{Cl}_4$

Answer 1

Answer: (A), (D)

The correct options are
A ${Cl}_2$
D $C{Cl}_4$

$C{l}_2$ and $CC{l}_4$ are non-polar.
The two atoms of chlorine involved are the same and have the same electronegativity, the difference is zero but it doesn't mean the electrons are always evenly shared. Thus the bond in $C{l}_2$ is non-polar.
$CC{l}_4$ has a tetrahedral structure. Has 4 $C-Cl$ polar covalent bonds directed to the four corners of the tetrahedron. All the dipoles cancel each other giving a net dipole moment of zero for the entire molecule. So $CC{l}_4$ is non polar.