The prefix "di" means two, and it's a key part of understanding the term.

Here are some examples of common diatomic molecules:

* Oxygen (O2)

* Nitrogen (N2)

* Hydrogen (H2)

* Chlorine (Cl2)

* Fluorine (F2)

* Bromine (Br2)

* Iodine (I2)

Let me know if you'd like to know more about diatomic molecules!