compar the characteristics merits and demarits of dobereiner and newland s perodic table
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Explanation:
Demerits of Mendeleev Periodic Table
He was unable to locate hydrogen in the periodic table.
Increase in atomic mass was not regular while moving from one element to another. ...
Later on, isotopes of elements were found which violated Mendeleev's periodic law
the position of isotopes could not be explained by Mendeleev periodic table . tongue order of atomic masses of some elements could not be explained. a correct position could not assig to hydrogen in the periodic table of Mendeleev.
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