Channel: Avanti Gurukul

Category: Education

Tags: #cbse class 10 periodic classification revisionperiodic classification of elements full chapter class 10 cbse#periodic classification of elements revision#cbse class 10 chemistry revision#cbse class 10 periodic properties revisionclass 10 science chapter 5 periodic classification of elementsclassification of elements class 10periodic classification of elements class 10#periodic properties class 10#revise periodic propertiesclass 10 cbse chemistry periodic table

Description: In this video, rahul sir helps you go through the important concepts in the chapter - Periodic Classification of Elements in CBSE Class 10 Chemistry. Chapter Summary Elements are classified on the basis of similarities in their properties. Döbereiner grouped the elements into triads and Newlands gave the Law of Octaves. Mendeléev arranged the elements in increasing order of their atomic masses and according to their chemical properties. Mendeléev even predicted the existence of some yet to be discovered elements on the basis of gaps in his Periodic Table. Anomalies in arrangement of elements based on increasing atomic mass could be removed when the elements were arranged in order of increasing atomic number, a fundamental property of the element discovered by Moseley. Elements in the Modern Periodic Table are arranged in 18 vertical columns called groups and 7 horizontal rows called periods. Elements thus arranged show periodicity of properties including atomic size, valency or combining capacity and metallic and non-metallic character. #Periodic Classification