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Byju's Answer
Standard XII
Chemistry
Redox Reactions and Couple
Oxidation sta...
Question
Oxidation state of
S
in
N
a
2
S
2
O
3
is
A
5
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B
-1
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C
2
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Solution
The correct option is
C
2
O.S. of Na = +1 (alkali metal)
O.S. of O = -2
⇒
N
a
2
S
2
O
3
⇒
2
(
1
)
+
2
n
+
3
(
−
2
)
=
0
⇒
X
=
4
2
=
2
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