2. (4 marks) Predict the bond polarity for the triple bond between carbon and nitrogen in a molecule of hydrogen cyanide. Include a diagram that includes the partial negative and positive charges and the direction of the bond dipole.

3. (4 marks) Predict the polarity of a molecule of boron trifluoride, BF3. Include a shape diagram, both dipoles and the final resultant dipole (if nonzero) of the molecule.