The answer is True because they are formed of deposition.
Antimony also forms trihalides and pentahalides, such as SbF3 , where its oxidation state is +3, and SbF5 , where its oxidation state is +5
I think the answer is A or C sorry for not having that good of an answer
Solubility is the ability of a solid, liquid, or gaseous chemical to dissolve in solvent (usually a liquid) and form a solution.
So therefore your answer is 1.
Https://www.thoughtco.com/noble-gases-properties-and-list-of-elements-606656