Question

demerits of mendeleev periodic table ???​

Answer 1

Answer:

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.

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Answer 2

Answer:

1 more elements are let to be known

2 there was no regular trend to increase a atomic mass when moved along the element

3 he could not place the element hydrogen in appropritate position in the periodic tabular forrm

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