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Among the following statements the one that is not true about Mendeleev's Periodic Table is:

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Elements were arranged on the basis of atomic weights

Some elements in the same group differ in their properties

The position of hydrogen was not justified

Elements of group 7 and 8 were arranged on the basis of equivalent weights

answer is D.

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Detailed Solution

Elements of group 7 and 8 were arranged on the basis of equivalent weights

In Mendeleev's periodic table, elements were arranged on the basis of atomic weights.

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