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JEE Main Chemistry Class 12 Co-ordination Compounds Part 3 Questions
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© examsnet.com
Question : 5
Total: 82
Which one of the following complexes will exhibit the least paramagnetic behaviour?
[Atomic number,
Cr
=
24
,
Mn
=
25
,
Fe
=
26
,
Co
=
27
]
[5 Apr 2024 Shift 1]
[
Co
(
H
2
O
)
6
]
2
+
[
Fe
(
H
2
O
)
6
]
2
+
[
Mn
(
H
2
O
)
6
]
2
+
[
Cr
(
H
2
O
)
6
]
2
+
Validate
Solution:
Number of unpaired
e
−
µ
=
√
n
(
n
+
2
)
B.M.
[
Co
(
H
2
O
)
6
]
2
+
3
3.87
[
Fe
(
H
2
O
)
6
]
2
+
4
4.89
[
Mn
(
H
2
O
)
6
]
2
+
5
5.92
[
Cr
(
H
2
O
)
6
]
2
+
4
4.89
Least paramagnetic behaviour
=
[
Co
(
H
2
O
)
6
]
2
+
© examsnet.com
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