How many of the following molecules are polar? Brcl3 cs2 sif4 so3

BrCl3

Explanation:

BrCl3: This compound has a T - shaped molecular geometry. And the difference in electronegativity is 0.2 to be precise makes is polar covalent compound.

CS2: Carbon sulphide is clearly a non polar compound because of the similar electronegativities of both carbon and sulphur.

SiF4: This molecule has Tetrahedral geometry. So, even though the difference in the electronegativity of Sulphur and Florine is high, the tetrahedral geometry makes it a non polar compound.

SO3: This molecule has trigonal planer geomtry. Hence, again in this molecule the polarity is being equal and opposite is cancelled out.