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JEE Main Chemistry Class 12 Co-ordination Compounds Part 2 Questions
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© examsnet.com
Question : 98
Total: 100
Simplified absorption spectra of three complexes ((i), (ii) and (iii)) of
M
n
+
ion are provided below; their
λ
max
values are marked as A, B and C respectively. The correct match between the complexes and their
λ
max
values is :
(i)
[
M
(
N
C
S
)
6
]
(
−
6
+
a
)
(ii)
[
M
F
6
]
(
−
6
+
n
)
(iii)
[
M
(
N
H
3
)
6
]
n
+
[Sep. 02, 2020 (II)]
A
−
(
i
i
i
)
,
B
−
(
i
)
,
C
−
(
i
i
)
A
−
(
i
i
)
,
B
−
(
i
)
,
C
-(iii)
A
−
(
i
i
)
,
B
−
(
i
i
i
)
,
C
−
(
i
)
A
−
(
i
)
,
B
−
(
i
i
)
,
C
−
(
i
i
i
)
Validate
Solution:
Stronger the ligand greater is splitting of
d
orbitals and smaller will be wavelength of light absorbed. According to spectrochemical series, the splitting power of ligands is
N
H
3
>
N
C
S
>
F
.
Thus, order of wavelength of light absorbed is
λ
N
H
3
<
λ
N
C
S
<
λ
F
−
© examsnet.com
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