Why is BrCN a polar molecule?

1 Answer
Apr 21, 2014
  • BrCN is a polar molecule because the electrons are not "pulled" with the "same strength" by the constituents. (not the exact chemistry explanation but just to help make it clear - see electronegativity).


Due to differences in electronegativity, there is an unequal sharing of the electrons therefore it is a polar molecule:


As you can see, the nonpolar molecules have equal "pull" of electrons whereas the polar molecules are the opposite.

For a great explanation: