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Standard XII
Chemistry
Valency and Oxidation State
Question
Oxidation number of 'S' in
N
a
2
S
4
O
6
is:
+
0.5
2.5
+
4
+
6
A
+
6
B
2.5
C
+
4
D
+
0.5
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Solution
Verified by Toppr
Let the oxidation number of
S
in
N
a
2
S
4
O
6
be
x
. The oxidation states of
N
a
and
O
are
+
1
and
−
2
respectively. Since the atom as whole is neutral, following equation holds true:
2
×
(
+
1
)
+
4
×
(
x
)
+
6
×
(
−
2
)
=
0
⟹
2
+
4
x
−
12
=
0
⟹
4
x
=
12
−
2
⟹
4
x
=
10
⟹
x
=
5
2
=
2.5
Hence, answer is
B
.
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Similar Questions
Q1
Oxidation number of 'S' in
N
a
2
S
4
O
6
is:
View Solution
Q2
The oxidation number of
S
in
N
a
2
S
4
O
6
is
:
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Q3
Calculate oxidation number of
S
in
N
a
2
S
2
O
3
&
N
a
2
S
4
O
6
respectively.
View Solution
Q4
Assertion: The formal oxidation number of sulphur in
N
a
2
S
4
O
6
is 2.5.
Reason: Two
S-atoms
are not directly linked via
O-atoms
.
View Solution
Q5
Assertion :All the
S
atoms in
S
4
O
2
−
6
have oxidation number equal to
+
2.5
. Reason: Average oxidation number of sulphur in
S
4
O
2
−
6
is
+
2.5
.
View Solution