What are the drawbacks of mendeleev's periodic table 0 brainly?
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1)He could not assign a correct position to hydrogen in the periodic table
2) position of isotopes of all the elements were not certain according to mendeleev periodic table
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Mendeleev could not arrange hydrogen properly because it shows the properties of both alkali metals and halogen. 2. Mendeleev could not arrange isotopes because they have different atomic weights but the same atomic number
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