Question

in the at.atmosphere oxygen is available as 02 but not as o. reason

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Answer 1

Answer:

Oxygen is available as O2 not as O because pure oxygen is highly reactive it will combine with anything to form oxides,disconnected atoms have a very strong tendency to form bonds. So if there is nothing else available for oxygen atom to combine it will combine with another oxygen atom to form an oxygen molecule.

Explanation:

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