Answer:
It is a chemical element
Explanation:
Gas is most likely a liquid heated up but it could be a solid put into a liquid
then into a gas ( liquid nitrogen ) also for hydrogen . . .
Hydrogen is a nonmetal and is placed above group in the periodic table because it has ns1 electron configuration like the alkali metals. However, it varies greatly from the alkali metals as it forms cations (H+) more reluctantly than the other alkali metals.
