Question

Compare the approach of mendeleev and modern periodic table

Answer 1

Mendelev's table was based on atomic masses while modern is based on atomic no.
Mendelev's table did not had a proper place for hydrogen while modern periodic table had.




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Answer 2

Answer:

• Mendeleev’s Approach for periodic law

Chemical properties and Physical properties of the elements are the periodic functions of the atomic mass of the corresponding elements.

• Modern approach for the periodic law

Chemical properties and Physical properties of the elements are the periodic functions of the atomic numbers of the corresponding elements.