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Formation of O2 molecule

Answer»
A molecule that is COMPOSED of two OXYGEN atoms, O2, that has no color, odor, or TASTE. It is present in both the atmosphere and the oceans, and solar radiation with wavelengths less then 242 nm can break it back into oxygen atoms, O2 ---> O + O. One of these oxygen RADICALS in turn can combine with O2 to form ozone, O2 + O ---> O3.
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