Question

what is diatomic molecules​

Answer 1

the molecules consists of two atoms are called diatomic molecules.

Answer 2

Diatomic molecules are molecules composed of only two atoms, of the same or different chemical elements. The prefix di- is of Greek origin, meaning "two". If a diatomic molecule consists of two atoms of the same element, such as hydrogen (H2) or oxygen (O2), then it is said to be homonuclear.