1. Order the following elements in terms of increasing ionization energy: Ar, Cl, Na, S
A: Na, S, Ar, Cl
B: Cl, Ar, S, Na
C: Ar, Cl, S, Na
D: Na, S, Cl, Ar
2. Order the following elements in terms of decreasing electron affinity (note that a decreasing electron affinity, refers to an increasing tendency to want to capture an electron): Ar, Cl, Na, S
A: Na, S, Ar, Cl
B: Cl, Ar, S, Na
C: Cl, S, Na, Ar
D: Ar, Na, S, Cl