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10th CBSE
IMPORTANT
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Which is the smallest element of third period? (Sodium/ Argon)

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Important Questions on Periodic Classification of Elements

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10th CBSE
IMPORTANT
What are the elements present in the first period?
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10th CBSE
IMPORTANT

Name the following:

An element of group 17 which is solid at room temperature.

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10th CBSE
IMPORTANT

Name the following:

The valency of elements in group 1.

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10th CBSE
IMPORTANT
The noble gas having the electronic configuration 2, 8, 8 is (Neon/ Argon).
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10th CBSE
IMPORTANT
The most electronegative element of second period. (Oxygen/ Fluorine)
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10th CBSE
IMPORTANT

Name the following:

A greenish yellow gas other than chlorine.

EASY
10th CBSE
IMPORTANT
The element which is most electronegative in the third period (Argon/ Chlorine)
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10th CBSE
IMPORTANT

Name the following:

The most non-metallic element in the third period.