What is the basic difference in approach between Mendeleev's periodic table and modern periodic table?

What is the basic difference in approach between Mendeleev's periodic

1.	What is the basic difference in approach between Mendeleev's periodic table and modern periodic table?
Answer» Solution :The Main BASIC differnce between Mendeleev.s PERIODIC table and MODERN periodic table is that FIRST one is constructed on the basis of atomic weight and the later is constructed on THEBASIS of atomic number.