Question

major 5 difference between mendelev and modern periodic table​

Answer 1

In the modern periodic table, the elements are arranged in order of increasing atomic number. (In Mendeleev's table, they were arranged in order of increasing atomic weight). More elements are in the modern periodic table which have been discovered since Mendeleev's time.

Answer 2

Elements have been arranged in increasing order of atomic masses. Element have been arranged in increasing order of their atomic number. ... All elements are filled in increasing order of atomic number. No gaps Ieft in the periodic table.