Question

1. Choose the most electronegative atom.
a. H
b. Ar
c. Zn
d. C
e.Cl

2. Which one of the following molecules is nonpolar?
a. SO2
b. NH3
c. H2S
d. CH3Cl
e.SO3
3. Which one of the following molecules or ions is polar?
a. NH4+
b. SO3
c. XeF2
d. F2
e. IF5

Answer 1

1 - b

2 - e

3 - a