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Limitations of Mendeleev's Periodic Table

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Question

Write a short note on the position of isotopes in the Mendeleev`s and the modern periodic table.

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Solution

Isotopes have similar chemical properties but different masses. Based on periodic law an isotope is an element which must have a separate place in periodic table. However there are ni places fir isotopes in Mendeleev periodic table. Since isotopes have same atomic number they haven't been given any specific position in modern period table.

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