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JEEMAIN and NEET
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2017
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Q)
Correct increasing order for the wavelengths of absorption in the visible region for the complexes of
C
o
3
+
is -
( A )
[
C
o
(
H
2
O
)
6
]
3
+
,
[
C
o
(
N
H
3
)
6
]
3
+
,
[
C
o
(
e
n
)
3
]
3
+
( B )
[
C
o
(
N
H
3
)
6
]
3
+
,
[
C
o
(
e
n
)
3
]
3
+
,
[
C
o
(
H
2
O
)
6
]
3
+
( C )
[
C
o
(
H
2
O
)
6
]
3
+
,
[
C
o
(
e
n
)
3
]
3
+
,
[
C
o
(
N
H
3
)
6
]
3
+
( D )
[
C
o
(
e
n
)
3
]
3
+
,
[
C
o
(
N
H
3
)
6
]
3
+
,
[
C
o
(
H
2
O
)
6
]
3
+
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