SELECT * FROM question_mgmt as q WHERE id=3181 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=2 AND subId=9 AND chapterId=51 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED)

Question:

Find the oxidation state of sodium in Na2O2.

Answer:

Let the oxidation state of Na be x. The oxidation state of oxygen, in case of peroxides, is-1.

Therefore,

2(x) + 2(-1) = 0

2x - 2 = 0

2x = 2

x = 1

Therefore, the oxidation sate of sodium is +1.


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