What is on the left side of the periodic table that is a non metal

although there is a non-metal on the left side, Hydrogen, it can also act as a cation (something a metal would normally be).

Hydrogen is a very special element. Not only does it have 0 neutrons (not including isotopes), but that one proton results in having one more electron OR one less electron.

Thus, Hydrogen can act as a cation, like in acids, or an anion, like in molecular 

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