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04/12/2021 4:34 pm
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Which of the following substances acts as an oxidising as well as a reducing agent?
(a) Na2O
(b) SnCl2
(c) Na2O2
(d) NaNO2
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04/12/2021 4:36 pm
Correct answer: (d) NaNO2
Explanation:
In Na2O, SnCl2 and Na2O2 central atom is either in lowest or highest oxidation state, so they can function either as an oxidising or a reducing agent but not both. However, the oxidation state of N in NaNO2 is +3 which lies between its highest (+5) and lowest (-3) values.