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Standard IX
Chemistry
Quantum Number
Question
Consider the ground state of Cr atom (Z = 24). The numbers of electrons with the azimuthal quantum numbers,
l
= 1 and 2 are, respectively:
16
and
4
12
and
4
12
and
5
16
and
5
A
12
and
4
B
12
and
5
C
16
and
5
D
16
and
4
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Solution
Verified by Toppr
The electronic configuration of Cr along with the values of the quantum numbers
n
and
l
are shown.
n
l
1
s
2
1
0
2
s
2
2
0
2
p
6
2
1
3
s
2
3
0
3
p
6
3
1
3
d
5
3
2
4
s
1
4
0
Thus the number of electrons with
l
=
1
is
12
and the number of electrons with
l
=
2
is
5
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