Question

what is limitation of mendeleev periodic table

Answer 1

Heya......!!!!

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♦ LIMITATIONS OF Mendeleev's Periodic Table ♦ :-

➡ Position of Hydrogen => Position of hydrogen in the perodic table is Uncertain , Because hydrogen is placed in 1 A group with Alkali metals .

➡ Position of isotopes => isotopes haven't been given separate place in perodic table .

➡ Cause of periodicity => Mendeleev could not explain the cause of periodicity .

➡ Separation of similar elements => some dissimilar elements have been placed together .

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Answer 2

Mendeleev could not determine the accurate position of the hydrogen atom in his table.

This is because hydrogen’s characteristics are very similar to halogens and alkali metals.

Other key limitations in Mendeleev periodic table were that the atomic number in the table was not shown increasing in a regular pattern and the symmetry of the table was also disturbed.