1. Order the following compounds in terms of increasing polarity.
CO, CCl4, NaCl, H2O
A. CCl4, CO, H¬2O, NaCl
B. NaCl, H2O, CO CCl4,
C. CO, CCl4, H¬2O, NaCl
D. NaCl, H2O, CCl4, CO
2. How many valence shell electrons are in the molecule CCl4?
A. 8 D: 40
B. 18 E: 74
C. 32