Assertion: In some cases,oxygen exhibits a po | vedclass

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(A) Oxygen is the second most electronegative element after fluorine.Therefore,in compounds of oxygen with fluorine,oxygen exhibits a positive oxidati

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Both assertion and reason are true and the reason is the correct explanation of the assertion.

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(A) Oxygen is the second most electronegative element after fluorine.Therefore,in compounds of oxygen with fluorine,oxygen exhibits a positive oxidation state.Since the electronegativity of fluorine is higher than that of oxygen,fluorine pulls the electron density towards itself,forcing oxygen into a positive oxidation state.For example,in $OF_2$,the oxidation state of oxygen is $+2$.

Assertion: In some cases,oxygen exhibits a positive oxidation state. Consequently,it is an electronegative element.
Reason: Fluorine is more electronegative than oxygen.

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Assertion: In some cases,oxygen exhibits a positive oxidation state. Consequently,it is an electronegative element.Reason: Fluorine is more electronegative than oxygen.