explainwhether each of the molecule is polar or not and explain why c2cl2 and scl2

Answer 1

C2Cl2 It is a linear molecule Cl-C=-C-Cl so its dipole moment becomes zero and it behaves as a non polar molecule.

SCl2: S has four orbital shapes, two of which share one electron with Cl ion. but it is not linear, the angle between the the two Cl ions is 103 degrees (tetrahedrial bonds), so the next effect is for the molecule to have a dipole moment and it is polar https://encrypted-tbn0.gstatic.com/images?q=tbn%3AANd9GcQDk8FwJAL69uV0NSIOwmTAJKg87o3h-WMa6iW5SJcRwrffVkR8

Answer 2

I believe you must have made a typo. C2Cl2 doesn't exist. Both C atoms as drawn by Cl-C=C-Cl are three valent and that is a no no. You may have meant C2H2Cl2. That doesn't change the answer Bob Pursley gave you.