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Periodic Table and Periodicity
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Modern periodic table and classification of elements
NEET level
Single correct option
Difficulty 1 of 3
pt041
An element has the ground-state configuration
[
Ar
]
3
d
6
4
s
2
. It belongs to the
A
s-block
B
p-block
C
d-block
D
f-block
Answer: C
The last electron enters the 3d subshell, so the element (iron) is a d-block element.
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