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Question
Chemistry
The magnetic moment of complex Kn [MnF6] is 4.9 BM. What is the oxidation number of Mn and what is the value of n?
Q. The magnetic moment of complex
K
n
[
M
n
F
6
]
is 4.9 BM. What is the oxidation number of Mn and what is the value of n?
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CMC Medical
CMC Medical 2012
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A
M
(
V
)
,
n
=
1
B
M
n
(
II
)
,
n
=
4
C
M
(
III
)
,
n
=
3
D
M
n
(
I
V
)
,
n
=
2
Solution:
In
K
n
[
M
n
F
6
]
is n = 3 because the magnetic moment of
M
n
3
+
is 4.9
2
S
(
S
+
1
)
=
2
2
(
2
+
1
)
=
4.9
n
=
2