The formula which represent compounds are CO₂ & H₂O, as they are composed of the different atoms.
What are compounds?
Compounds are that chemical species which are formed by the combination of the different chemical atoms or entities.
- In the given options H₂, O₂ are not compounds as they are formed by the same atoms.
- And CO₂, H₂O and H₂O₂ are the compounds as they are formed by the mixture of diferent atoms.
Hence CO₂ & H₂O are compounds.
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