Is oxygen considered an diatomic molecule?

Yes except when it is atomic O or ozone, O3. It is diatomic in its normal state at room T and P.

Thanks!

Yes, oxygen is considered a diatomic molecule. A diatomic molecule consists of two atoms, and in the case of oxygen, it consists of two oxygen atoms bonded together. The chemical formula for oxygen is O2, indicating that the molecule contains two oxygen atoms. This property of oxygen can be determined by studying its molecular structure and composition using various experimental techniques like spectroscopy or X-ray crystallography.