CH 5 THE PERIODIC TABLE

Periodic table is a chart of elements prepared in such a way that elements with similiar properties occur in the same group.

The reason for the classification of elements are :- It helps in studying the elements in an organized manner. It helps in correlatinng the properties of elements with the fundamental properties of all states of matter. It helps in defining the relationship of one element with another.

The certain elements displayed similiar properties and that they could be placed in groups of three elements each. These groups of three elements each were called Triad.