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Byju's Answer
Standard XII
Chemistry
Valency and Oxidation State
Oxidation num...
Question
Oxidation number of
C
r
in
(
N
H
3
)
3
C
r
(
O
2
)
2
is:
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Solution
Let
x
be the oxidation number of
C
r
in
(
N
H
3
)
3
C
r
(
O
2
)
2
.
Since, the overall charge on the complex is
0
, the sum of oxidation states of all elements in it should be equal to
0
.
Therefore,
3
(
0
)
+
x
+
2
(
−
2
)
=
0
Hence,
x
=
+
4
Thus, the oxidation number of Cr in
(
N
H
3
)
3
C
r
(
O
2
)
2
is
+
4
.
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