Which element is an example of a diatomic element in its natural state?

Hydrogen is an example of a diatomic element in its natural state because it naturally exists as molecules composed of two atoms (H₂). This diatomic form is a characteristic of several elements in group 17 and group 15 of the periodic table, where they tend to form molecules with two atoms for stability. In contrast, neon, carbon, and gold are found in different forms. Neon is a noble gas that exists as single atoms in its natural state, carbon can exist in various allotropes most commonly as graphite or diamond (not diatomic), and gold is a metal that typically exists as individual atoms or in clusters, but not as diatomic molecules. Thus, hydrogen stands out as the only diatomic element from the choices provided, reflecting its natural molecular form and importance in various chemical reactions.