Write the limitations of mandeleeve period table
Answers
Answer:
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.
So it was not possible to predict how many elements could be discovered between two elements.
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Answer:
(a) Position of hydrogen: It could not assign a correct position to hydrogen in the table. (b) The lanthanides and actinides are not placed in the main body of the table. (c) Position of isotopes: There are no separate positions for isotopes of an element