Elements like hydrogen don't normally occur in their pure atomic form. They typically exist in the following ways:

* Diatomic molecules: This is the most common form for hydrogen. It exists as a molecule with two hydrogen atoms bonded together, written as H₂.

* Compounds: Hydrogen is highly reactive and readily combines with other elements to form various compounds. Examples include water (H₂O), methane (CH₄), and ammonia (NH₃).

* Ions: Hydrogen can also exist as a positively charged ion (H⁺), often referred to as a proton. This form is crucial in many chemical reactions and biological processes.

While hydrogen atoms can exist independently in specific situations like plasmas or high-energy environments, they are generally short-lived and quickly react to form molecules or compounds.