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Write the Demetri of Mendeleev's periodic table.

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Write the Demetri of Mendeleev's periodic table.
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Write the Demetri of mendeleev's periodic table.

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  • He was unable to locate hydrogen in the periodic table.
  • Increase in atomic mass was not regular while moving from one element to another. Hence, the number of elements yet to be discovered was not predictable.

  • Later on isotopes of elements were found which violated Mendeleev’s periodic law.
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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. Hence, the number of elements yet to be discovered was not predictable. 
  • Later on, isotopes of elements were found which violated Mendeleev’s periodic law.
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