Question

state Mendeleev's periodic laws and mordern periodic law​

Answer 1

Answer:

The physical and chemical properties of elements are a periodic function of their atomic weights”

This means that physical and chemical properties of elements depends on their atomic weight such that on arranging elements in increasing order of atomic weight, elements with similar properties are repeated after regular intervals of increasing atomic weight.

Answer 2

Answer:

Mendeleev and Mayer developed the periodic law independently in 1869. ... According to the Modern periodic law, the properties of the elements are repeated at a particular regular intervals when these elements are arranged in the increasing order of their atomic numbers.

Modern periodic table does correct defects of the Mendeleev's periodic table.