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Byju's Answer
Standard XII
Chemistry
Multi-Electron Configurations and Orbital Diagrams
Ground state ...
Question
Ground state electron configuration for Cr is given by
:
A
[Ar] 3s
2
3d
4
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B
[Ar] 3s
2
3d
5
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C
[Ar] 4s
2
3d
5
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D
[Ar] 4s
2
3d
4
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E
[Ar] 4s
1
3d
5
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Solution
The correct option is
E
[Ar] 4s
1
3d
5
Due to a more stable half-filled 3d-orbital, the ground-state electron configuration for Cr would be [
A
r
]
4
s
1
3
d
5
.
Suggest Corrections
0
Similar questions
Q.
Statement I : Ground state electronic configuration
of chromium atom is
(
A
r
)
4
s
1
3
d
5
.
Statement II: Exchange energy is more
wtih
(
A
r
)
4
s
1
3
d
5
then
(
A
r
)
4
s
2
3
d
4
.
Q.
Match species given in Column I with the electronic configuration given in Column II.
Column I
Column II
A
C
r
(i)
[
A
r
]
3
d
8
4
s
0
B
F
e
2
+
(ii)
[
A
r
]
3
d
10
4
s
1
C
N
i
2
+
(iii)
[
A
r
]
3
d
6
4
s
0
D
C
u
(iv)
[
A
r
]
3
d
5
4
s
1
(v)
[
A
r
]
3
d
6
4
s
2
Q.
Which rule explains the electronic configuration of chromium is [Ar]
3
d
5
4
s
1
instead of [Ar]
3
d
4
4
s
2
?
Q.
S
c
−
[
A
r
]
3
d
1
4
s
2
C
a
−
[
A
r
]
4
s
2
M
g
−
[
N
e
]
3
s
2
C
o
−
[
A
r
]
3
d
7
4
s
2
What are the use of writing electronic configuration this fashion?
Q.
Listed below are the electronic configuration of five elements. Arrange the elements in the increasing order of metallic character:
(a)
[
A
r
]
3
d
10
4
s
2
(b)
[
A
r
]
4
s
2
(c)
[
A
r
]
3
d
10
4
s
2
4
p
6
5
s
2
(d)
[
A
r
]
3
d
10
4
s
2
4
p
5
(e)
[
A
r
]
3
d
10
4
s
2
4
p
6
5
s
1
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