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NCERT Class XI Chemistry The s-Block Elements Solutions

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Question : 4 of 32
Marks: +1, -0
Find out the oxidation state of sodium in Na2O2Na_2O_2.
Solution:  
Let oxidation state of Na = x
The oxidation state of O = –1 (present as peroxide)
∴ 2x + 2(–1) = 0 ⇒ 2x – 2 = 0 ⇒ 2x = 2 ⇒ x = +1
∴ Oxidation state of Na in Na2O2Na_2O_2 is +1.
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