Question

limitations of mendelive periodic table​

Answer 1

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.

Answer 2

Limitations of mendeleev periodic table are:

i. Position of isoropes were not fixed.

ii. Elements were arranged according to their molecular mass, creating certain errors.

iii. Position of hydrogen was not fixed.

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