Sagot :
Answer:
Bromine. Helium is one of the many non-metals that is a gas. Other non-metal gases include hydrogen, fluorine, chlorine, and all the group eighteen noble (or inert) gases.
Answer:
Bromine. Helium is one of the many non-metals that is a gas. Other non-metal gases include hydrogen, fluorine, chlorine, and all the group eighteen noble (or inert) gases.