Helium, He, is a nonmetallic gas and the second element in the periodic table. Rather than being placed adjacent to hydrogen, H, however, helium is placed on the far right of the table. why?

Helium, He, is a nonmetallic gas and the second element in the periodi

1.	Helium, He, is a nonmetallic gas and the second element in the periodic table. Rather than being placed adjacent to hydrogen, H, however, helium is placed on the far right of the table. why?
Answer» is placed in in right of periodic table because it is NOBEL gas it's valency is 0 so it is placed in zero GROUP and zero group is FAR right of the table