Question

Which of the following elements atomic masses corrected by Mendeleev? *​

Answer 1

Answer:

Berryllium, Gold, Platinum and Indium are the elements atomic masses corrected by Mendeleev

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Answer 2

Answer:

Mendeleev arranged the then known elements in increasing order of their atomic weight and observed the periodicity of properties of elements . Using the concept of valency he calculated atomic mass using the formula atomic mass = equivalent weight × valency . Thus he changed the atomic weights of Be,In and Os.