Answers

2016-03-01T23:08:00+05:30
O2 is mean a single molecule of oxygen where two atom of oxygen were reaction to each otherand made a single molecule
but 2o is two atom of oxygen
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2016-03-01T23:20:56+05:30
O2 means single molecule of oxygen. 2O means two atoms of oxygen. Don't get confused. Try to comprehend their structure. Hope I helped u.. Plz mark as the BRAINLIEST answer..
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