Covalent Bonding
For the 1987 Copyright of The Addison Wesley Textbook
2) What is a molecule? What does a molecule's structural formula indicate?
3) How does a polar covalent bond differ from a nonpolar covalent bond? Which type of
bond is found in molecular oxygen? In carbon monoxide?
4) Ammonia is often used in cleaning solutions. Is the octet rule satisfied for each atom in
the ammonia molecule?
5) Describe single, double, and triple covalent bonds.
6) The bond angles in ammonia are 107 degrees and in ammonium ion they are 109.5 degrees.
Explain the difference between bond angles.
7) What factors determine the polarity of a molecule?
8) What does each letter in VSEPR stand for? What is teh VSEPR theory?
9) Are the following molecules polar or nonpolar? Explain your answer.
a. bromine moleucle
b. carbon monoxide
c. oxygen difluoride
d. sulfur hexafluoride
e. beryllium chloride
f. iodine monofluoride
10) The molecules nitrogen trifluoride and boron trifluoride have different shapes. What
are the shapes of these two molecules? Why are they different?
