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Molecular structure

Molecules can be categorized as monatomic and polyatomic based on the number of atoms within them. Monatomic molecules consist of only one atom, such as molecules of noble gases. Polyatomic molecules contain two or more atoms of the same or different elements. Molecules composed of several atoms of the same element include hydrogen (H₂), nitrogen (N₂), oxygen (O₂), ozone (O₃), and so on. Polyatomic molecules also include molecules of many compounds, such as salts, acids, bases, and organic compounds. The nature of the interatomic bonds in polyatomic molecules is crucial for studying the properties of various substances.