Question

I have a question I want to make sure I'm going in the right direction.

The question states give a diatomic element which is not a gas could the answer be any of the noble gases

Answer 1

No, because all of the noble gases are monatomic, not diatomic AND all are gases. The question says "not a gas."
H2, N2, O2, F2, Cl2, are gases so those are out. I suppose P (P4) and S (S8) are out since those at not monatomic BUT they aren't diatomic either (although they are not gases). I think your best bet is to look at the halogen column.

Answer 2

Could the answer be fluorine

Answer 3

In my first response I listed F2 as a gas.
No. One answer is Br. We write it as Br2 and it is a liquid. There is another halogen that is a solid. That is I2.