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formula of water is H2O why cannot we write as HO2? please explain?

 formula of water is H2O why cannot we write as HO2? please explain?

Grade:10

1 Answers

Simran Vinaik
askIITians Faculty 1230 Points
6 years ago
Because water molecule is made of 2 hydrogen and 1 oxygen. So we write it as H2O.
HO2would mean there are 2 oxygen and one hydrogen, and this is not the case.

And we dont write H20 as OH2because we write the element with a positive oxidation number first and then the element with negative oxidation stateIn H2O.

Oxidation state(o.s) of H is+1 and that of O is -2.

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