Question

Write a short note on ' medeleev 's periodic'

Answer 1

Mendeleev arranged the then known element in order of their increasing atomic weights grouping together the elements with the similar property and leaving Out blank spaces wherever necessary he also made the bold prediction that there were some unknown element which of course would be discovered in due course of time and would fill the blank spaces he even predicted their properties in light of the properties of the Other element in same groups later on this a known exactly the same properties as mendeleev proposed his periodic table .
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