Question

Give an account of the process adopted by mendeleev for the classification of elements how did he arrived at periodic

Answer 1

Mendeleev first studied the chemical properties of elements and made their oxides and hydrides. He arranged the elements in the increasing order of their atomic masses according to his periodic law. His table consisted of 8 groups and 6 periods. He also left space for future yet to be discovered elements
This way Mendeleev made his periodic table

Answer 2

Answer:When Mendeleev started his work, 63 elements were known.He selected hydrogen and oxygen as they are very reactive and formed compounds with most elements. The formulae of the hydrides and oxides formed by an element were treated as one of the basic properties of an element for its classification.

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Explanation: