Question

what do you understand by periodic law ? discuss the constructions of long from of periodic table ​

Answer 1

Explanation:

Modern periodic law states that “the physical and chemical properties of elements are the periodic function of their electronic configurations of their atoms”. ... Two rows are separately placed at the bottom of the periodic table.

Answer 2

The Modern Periodic Law states that ''The characteristic physical and chemical properties of chemical elements are a periodic function of their atomic numbers...''