Question

Which one of the following compound is polar? 1. CHCl3 2. CCl4 3. CO2 4. Boron trifluoride

Answer 1

Answer:

CHCl3 is a polar molecule.

Explanation:

CHCl3 is a polar molecule due to the large electronegativity difference between hydrogen (2.20) and chlorine (3.16). This induces a permanent dipole across the molecule with a partial positive charge on the hydrogen atom and a partial negative charge on the chlorine atoms.