Question

What is the basis for modern Mendeleey's periodic table and long form of periodic table

Answer 1

On the basis of classification :-

Mendeleev's periodic table is based on atomic mass. Elements are arranged in increasing order of atomic mass.

Modern periodic table is based on atomic number. Elements are arranged in increasing order of atomic mass.

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Answer 2

The periodic table based on the modern periodic law is called the Modern Periodic Table. Presently, the accepted modern periodic table is the Long Form of Periodic Table. It may be regarded as an extended form of Mendeleev’s table in which the subgroups A and B have been separated. Features of Long Form of Periodic Table.

plz refer 2 attachments given below

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