Question

short note on Mendeleev's periodic table
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Answer 1

Answer:

Mendeleev's ,elements were arranged on the basis of their fundamental property,the atomic mass and also on the similarities of the chemical properties.

when Mendeleev started his work ,63 elements were known . He examined the relationship between the atomic masses of the elements and their physical and chemical properties.

He concentrated on the compounds formed by elements with hydrogen and oxygen .He selected hydrogen and oxygen as they are very reactive and formed compounds with most elements .The formulas of the hydroxides and oxides formed by an element were treated as one of the basic properties of an elements are the periodic function of their atomic mass .