EASY
10th CBSE
IMPORTANT
Earn 100

The first meaningful attempt to classify elements was made by
(a)Prout
(b)Dobereiner
(c)Newlands
(d) Mendeleev

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Important Questions on Periodic Classification of Elements
EASY
10th CBSE
IMPORTANT
In the Modern Periodic Table, the elements are arranged in the order of

EASY
10th CBSE
IMPORTANT
The tenth element in the Periodic Table resembles with the

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10th CBSE
IMPORTANT
Which of the following sets of elements belong to the same period?

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10th CBSE
IMPORTANT
If the electronic configuration of an element is ; it will belong to:

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10th CBSE
IMPORTANT
If electronic configuration of an element is ; its valency is

MEDIUM
10th CBSE
IMPORTANT
Among the elements and , which has the smallest atomic radius?

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10th CBSE
IMPORTANT
Which of the following statements is not correct?

EASY
10th CBSE
IMPORTANT
is a /an
