The charge of a hydrogen atom depends on whether it has gained or lost an electron.

* Neutral Hydrogen: A neutral hydrogen atom has no charge.

* Hydrogen Ion (H+): A hydrogen atom that has lost its single electron has a charge of +1. This is the most common form of hydrogen in chemical reactions.

* Hydride Ion (H-): A hydrogen atom that has gained an electron has a charge of -1. This form is less common but can occur in certain compounds.