Question

what are the limitations of mendelev's classification ? ( explain in easy language )​

Answer 1

Mendelev's periodic says that "properties of the elements periodic function of their atomic masses".

Answer 2

Limitations of mendeleev’s classification :

(i) He could not assign a correct position of hydrogen in his periodic table, as the properties of hydrogen resembles both with alkali metals as well as with halogens.

(ii) The isotopes of the same element will be given different position if atomic number is taken as basis, which will disturb the symmetry of the periodic table.

(iii) The atomic masses do not increases in a regular manner in going from one elements to the next.