SECTION 1.4 DIFFICULTY LEVEL

24. Which of these molecules are polar?

HINT: look for the presence of at least one polar covalent bond in these molecules!

Br

2

NH

3

CH

4

H

2

OCO

2

VIII IVI II

a) I, IV

b) I, III

c) II, III, IV

d) III, IV, V

Answer: b