Isotopes are not positioned in Mendeleev periodic table. why?
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heres ur answer
Explanation:
Isotopes could not find a position in Mendeleev's periodic table because those were arranged according to atomic number in the increasing order but isotopes have the same atomic number, all isotopes cannot be fitted in a single box in the periodic table.
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Isotopes were discovered much later.
They were not known when Mendeleev made his periodic table.So they are not positioned in his periodic table
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