Question

why do we call oxygen O2​

Answer 1

Answer:

Because it contains 2 Oxygen Atoms

Answer 2

In normal air we breathe, the oxygen atoms forms a pair with its own atom to gain stability, so there will be two oxygen atoms. Thus, we have to take its symbol as O because it is oxygen symbol. And as there are two atoms, so there will be 2 in the lower right bottom of the symbol O. the final symbol will be O2.

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