Question

define modern periodic law discuss the construction of long form of periodic table​

Answer 1

Answer:

Hey mate...

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.

Hope it helps you!!!

Follow me✌✌

Answer 2

Answer:

Modern periodic table is divided into eight vertical columns of elements. Each vertical column of elements is called a "GROUP". The groups of the periodic table are further divided into two sub-groups or families "A and B". Elements of sub-group "A" are known as Normal elements or Representative elements.

Explanation:

pls mark me brainliest