Class 10

Periodic Classification of Elements question bank (Science)

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Q1.

Did Dobereiner's triads also exist in the columns of Newlands' Octaves? Compare and find out.

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Q2.

What were the limitations of Dobereiner's classification?

(A)
It could not classify all known elements into triads.
(B)
It was only applicable to non-metals.
(C)
It failed to predict the properties of noble gases.
(D)
It was based on atomic volume rather than atomic mass.
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