Question

Which element would be most reactive?
a. Al
b. Cl
c. P
d. Na

I initially thought that the answer was B, but I'm not sure about it.

My second question is...

Which non-metal is most reactive?
a. Cl
b. F
c. I
d. S

I'm not sure about the answer for this one since all of the answers are gases, except for the sulfur, which is a solid.

I'd appreciate any help. :)