Question

O2,H2 and N2 are monoatomic,diatomic,polyatomic or triatomic​

Answer 1

Answer:

Explanation:

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.

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Answer 2

Answer: they are diatomic.

Explanation:

since 2 atoms combine to form a molecule therefore diatomic.