Periodic Classification of Elements notes by pramod bhoj sir
2 Periodic Classification of Elements (Pramod Bhoj sir notes) The smallest particles are called atoms. Types of matter are solid , liquid , gas. Types of elements are metals , non-metals , metalloids. Today 118 elements were known. Q1. Why classification of elements ? More number of elements were discovered in the course of time. More and more information about the properties of these elements was gathered. To ease the study of such a large number of elements, scientists started studying the pattern if any, in the vast information about them. Dobereiner’s Triads · In the year 1817 a German scientist ...