Question

give demerits of mendelvees periodc table ​

Answer 1

demerit of Mendeleev periodic tables Mendeleev could not assign a correct position to hydrogen in the periodic table as hydrogen resembles alkali as well as halogen isotopes of the same element. have different atomic muscle tense. each of them should have been placed. at a different position in the periodic.

Answer 2

Explanation:

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The demerits of the periodic table given by Mendeleev are :

He could not place the element Hydrogen in appropriate position in the periodic tabular form.

There was no regular trend in increasing of atomic mass when moved along the elements.

More elements was yet to be known.