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Question
Chemistry
Cold ferrous sulphate solution on absorption of NO develops brown colour due to the formation of
Q. Cold ferrous sulphate solution on absorption of
NO
develops brown colour due to the formation of
3265
201
WBJEE
WBJEE 2015
Coordination Compounds
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A
paramagnetic
[
F
e
(
H
2
O
)
5
(
NO
)]
S
O
4
100%
B
diamagnetic
[
F
e
(
H
2
O
)
5
(
N
3
)]
S
O
4
0%
C
paramagnetic
[
F
e
(
H
2
O
)
5
(
N
O
3
)]
(
S
O
4
)
2
0%
D
diamagnetic
[
F
e
(
H
2
O
)
4
(
S
O
4
)]
N
O
3
0%
Solution:
Cold
F
e
S
O
4
solution on absorption of NO develops brown colour due to the formation of
[
F
e
(
H
2
O
)
5
(
NO
)
]
S
O
4
.
F
e
S
O
4
+
NO
+
5
H
2
O
⟶
Brown ring complex
[
F
e
(
H
2
O
)
5
(
NO
)
]
S
O
4
This complex has
3.89
BM
magnetic moment shows that it has 3 unpaired electrons.