What is the chemical symbol for the element oxygen?

The chemical symbol for oxygen is O, but it is frequently written as O2. This is because when oxygen is not chemically combined with anything else, it bonds to another oxygen atom, making an oxygen molecule. Oxygen is a diatomic molecule, and that's how we encounter it in air.

The chemical symbol for oxygen is:

O

The chemical symbol for the element oxygen is 'O'.

O2, but the answer should contain more then25 characters

O

"And that's another easy10 points :)"