Oxygen is an element with atomic number 8. O is the chemical symbol of oxygen. O2 is the molecular formula for oxygen as a gas, and it shows that there are two atoms of oxygen in one oxygen molecule.
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Oxygen (O2) is a gaseous chemical element essential for life. It makes up about 21% of Earth's atmosphere and is used by living organisms in the process of respiration to produce energy. Oxygen is also crucial for combustion and various chemical reactions.
We breathe in oxygen, which is in the form of O2 molecules.
There are 192 grams of oxygen in 6 moles of O2.
O2 has 2 atoms of oxygen.
O2 is a molecule made up of two oxygen atoms. Oxygen itself is an element, but when it combines with another oxygen atom to form O2, it is considered a molecule.
The covalent compound O2 is called oxygen gas.