write what are the limitations of mendeleeff's periodic table
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Limitations of Mendeleev’s periodic table:
(i) He could not assign a correct position to hydrogen in his periodic table, as the properties of hydrogen resemble both with alkali metals as well as with halogens.
(ii) The isotopes of the same element will be given a different position if the atomic number is taken as a basis, which will disturb the symmetry of the periodic table.
(iii) The atomic masses do not increase in a regular manner in going from one element to the next.
So, it was not possible to predict how many elements could be discovered between two elements.
(i) He could not assign a correct position to hydrogen in his periodic table, as the properties of hydrogen resemble both with alkali metals as well as with halogens.
(ii) The isotopes of the same element will be given a different position if the atomic number is taken as a basis, which will disturb the symmetry of the periodic table.
(iii) The atomic masses do not increase in a regular manner in going from one element to the next.
So, it was not possible to predict how many elements could be discovered between two elements.
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HERE IS YOUR ANSWER....
LIMITATIONS(OR ANOMALIES) OF MENDELEEV'S PERIODIC TABLE ARE:
1.The position of istopes could not be explained.
2.Wrong order of atomic masses of some elements could not be explained.
3.A correct position could not be assigned to hyrogen in the periodic table.
hoPe iT helpS ....
LIMITATIONS(OR ANOMALIES) OF MENDELEEV'S PERIODIC TABLE ARE:
1.The position of istopes could not be explained.
2.Wrong order of atomic masses of some elements could not be explained.
3.A correct position could not be assigned to hyrogen in the periodic table.
hoPe iT helpS ....
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