Q4 of 20 Page 143

Give a scientific reason for the following.

In chemical equations, oxygen is represented as O2 but not O and chlorine is represented as Cl2 but not Cl.

In chemical equations, oxygen is represented as O2 but not O and chlorine is represented as Cl2 but not Cl because oxygen and chlorine are diatomic molecules (consisting of only two atoms). They both exist in nature as diatomic molecules.


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