Why did Mendeleev's leave some gaps in his periodic table of elements? Explain your answer with an example.
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Mendeleev left some gaps in his periodic table of elements for the undiscovered elements. For example Mendeleev discovered eka-silicon with atomic mass of $$72$$, which was later named Germanium with atomic mass $$72.6$$.
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Q1
Why did Mendeleev leave some gaps in his periodic table of elements ? Explain your answer with an example.
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Q2
(a) Why did Mendeleev leave gaps in his periodic table?
(b) State any three limitations of Mendeleev's classification.
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Q3
Why did Mendeelev leave a few gaps in his periodic table ?