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Byju's Answer
Standard XII
Chemistry
Periods
In the fourth...
Question
In the fourth period of the periodic table, how many elements have one or more
4
d
electrons?
A
2
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B
18
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C
0
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D
6
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Solution
The correct option is
C
0
In fourth period of periodic table, There is no element having one or more
4
d
electron.
hence option C is correct.
Suggest Corrections
0
Similar questions
Q.
How many elements would be in the third period of the periodic table if the spin quantum number
m
s
could have the value
−
1
2
,
0
and
+
1
2
?
Q.
Assertion :The
5
t
h
period of periodic table contains 18 elements not 32. Reason:
n
=
5
,
l
=
0
,
1
,
2
,
3
. The order in which the energy of available orbitals
4
d
,
5
s
and
5
p
increases in
5
s
<
4
d
<
5
p
and the total number of orbitals available are 9 and thus 18 electrons can be accommodated.
Q.
How many elements would be in the
I
I
n
d
period of the Periodic Table if the spin quantum numbers could have the value
+
1
2
,
0
,
−
1
2
?
Q.
Statement I: The
5
t
h
period of the periodic table contains 18 elements and not 32.
Statement II:
n
=
5
,
l
=
0
,
1
,
2
a
n
d
3
. The order in which the energy of the orbitals 4d, 5s and 5p increases is
5
s
<
4
d
<
5
p
. The total number of orbitals available are 9 and thus, 18 electrons can be accomodated.
Q.
Element having electronic configuration
1
s
2
,
2
s
2
,
2
p
6
,
3
s
2
,
3
p
6
,
3
d
10
,
4
s
2
,
4
p
6
,
4
d
10
,
5
s
2
,
5
p
3
belongs to the group in the periodic table:
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