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Oxygen and oxygen. O=O. Or, say oxygen and carbon, CO. Oxygen and many other nonmetals con form covalent bonds.
1. Oxygen is made from...oxygen atoms.
2. Oxygen is a diatomic molecule.
3. Natural oxygen has three isotopes (types of atoms): 16O, 17O, 18O.
Carbon dioxide does.
Oxygen is an example of an atom, gas, and an element.
Oxygen and sulfur are elements.