Final answer:
Hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine, and iodine naturally occur as diatomic molecules, each composed of two atoms bonded together.
Step-by-step explanation:
Elements that naturally occur as diatomic molecules include hydrogen (H₂), nitrogen (N₂), oxygen (O₂), fluorine (F₂), chlorine (Cl₂), bromine (Br₂), and iodine (I₂). These elements are found in the molecular form rather than as individual atoms under standard conditions. For instance, the molecular formula H₂ indicates that hydrogen exists naturally as a molecule composed of two hydrogen atoms. Similarly, oxygen is represented as O₂, meaning it consists of two oxygen atoms bonded together. Halogen elements such as fluorine, chlorine, bromine, and iodine are also found as diatomic molecules because of their high reactivity and relatively low bond energies.