What was the anamuli or drawbacks of mendeleev periodic table
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he had atomic mass instead of atomic number, he is not able to put hydrogen in any group
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Explanation:
Position of hydrogen: Hydrogen is placed in group I. ...
Anomalous pairs: In certain pairs of elements, the increasing order of atomic masses was not obeyed. ...
Position of isotopes: Isotopes are the atoms of the same element having different atomic masses but same atomic number.
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