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Question
Chemistry
Which one of the following complexes is violet in colour?
Q. Which one of the following complexes is violet in colour?
1865
222
JEE Main
JEE Main 2021
Coordination Compounds
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A
[
F
e
(
CN
)
6
]
4
17%
B
[
F
e
(
SCN
)
6
]
4
17%
C
F
e
4
[
F
e
(
C
N
6
)
]
3
⋅
H
2
O
13%
D
[
F
e
(
CN
)
5
NOS
]
4
52%
Solution:
(1)
[
F
e
(
CN
)
6
]
4
−
→
Pale yellow solution
(2)
[
F
e
(
SCN
)
6
]
4
−
→
Blood red colour
(3)
F
e
4
[
F
e
(
C
N
6
)
]
3
⋅
H
2
O
→
Prussian blue
(4)
[
F
e
(
CN
)
5
NOS
]
4
−
→
Violet colour