Chemical Bonding: Polarity II: Molecular Shape Quiz

Polarity is also determined by the shape of a molecule. Molecules that are symmetrical tend to be nonpolar. Molecules that are asymmetrical tend to be polar. Polarity is like a game of tug-o-war. If there is an equal "pull" on the central atom from all sides, then the molecule is nonpolar. If there is an unequal "pull" on the central atom because of unshared electrons, then the molecule is polar. Water is a polar molecule. Refer to Example A attached to see the lone pairs of electrons attached to oxygen that keeps the molecule from being symmetric. You will need to view the attached images to complete this quiz. Select the best answer from the choices.