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Byju's Answer
Standard XII
Chemistry
Hund's Rule
The number of...
Question
The number of unpaired electrons in the ground state of
C
l
atom
(
a
t
o
m
i
c
n
u
m
b
e
r
=
17
)
is:
A
1
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B
2
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C
\N
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D
3
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Solution
The correct option is
A
1
Unpaired electrons are the electrons in the outermost shell which are singly occupying the shell.
The electronic configuration of
C
l
in its ground state =
1
s
2
2
s
2
2
p
6
3
s
2
3
p
5
So, in the orbital diagram of
3
p
orbital,
Only 1 electron is unpaired in the ground state.
Hence, the number of unpaired electrons in
C
l
is 1.
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1
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