A diatomic molecule is a molecule composed of only two atoms. Here are some common examples of diatomic molecules found in nature:

Gases:

* Hydrogen (H₂): The most abundant element in the universe, it exists as a diatomic gas.

* Nitrogen (N₂): Makes up about 78% of the Earth's atmosphere.

* Oxygen (O₂): Essential for respiration and is about 21% of the Earth's atmosphere.

* Fluorine (F₂): A highly reactive gas used in various industrial processes.

* Chlorine (Cl₂): Used as a disinfectant and bleach.

* Bromine (Br₂): A reddish-brown liquid that readily vaporizes.

* Iodine (I₂): A purple solid that sublimes readily.

Others:

* Carbon Monoxide (CO): A poisonous gas produced by incomplete combustion.

It's important to note that some elements like phosphorus (P₄) and sulfur (S₈) form molecules with more than two atoms, but they are still considered polyatomic molecules, not diatomic.