chancourtis contribution to periodic table
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Answer:
☑️☑️☑️☑️☑️☑️
☑️De Chancourtois was the first to arrange the chemical elements in order of atomic weights.
☑️He devised an early form of periodic table, which he called the telluric helix because the element tellurium came in the middle. ... de Chancourtois created a fully functioning and unique system of organizing the chemical elements....
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Explanation:
He arranged elements in the increasing order of at mass in the form of cylindrical structure
But this arrangement didn't made into light as it was not for heavier elements classification
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