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Question
Chemistry
Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour?
Q. Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour?
2859
188
KEAM
KEAM 2007
Coordination Compounds
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A
[
N
i
(
N
H
3
)
6
]
2
+
44%
B
[
Z
n
(
N
H
3
)
6
]
2
+
18%
C
[
C
r
(
N
H
3
)
6
]
3
+
20%
D
[
C
o
(
N
H
3
)
6
]
3
+
18%
Solution:
28
N
i
2
+
in
[
N
i
(
N
H
3
)
6
]
2
+
has
1
s
2
,
2
s
2
2
p
6
,
3
s
2
3
p
6
3
d
8
configuration. It uses
4
th
orbital to show
s
p
3
d
2
hybridizaation to form outer complex with
2
unpaired electrons in
3
d
−
orbital.