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Question

Oxidation state of S in Na2 S2O3 is

A
5
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B
-1
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C
\N
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D
2
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Solution

The correct option is D 2
O.S. of Na = +1 (alkali metal)
O.S. of O = -2
Na2S2O32(1)+2n+3(2)=0
X=42=2



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