Chemistry
Give reasons for the following.
Properties of elements are periodic functions of their atomic numbers and not atomic weights.
Periodic Table
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Answer
The properties of elements are dependent on the electronic configuration of their atoms. As similar electronic configurations repeat after regular intervals of atomic numbers hence properties of elements are periodic functions of their atomic numbers and not atomic weights.
This was seen when Mendeleeff arranged the elements on the basis of their atomic weights. Certain defects were present in Mendeleeff's periodic table which got removed when elements were arranged as per their atomic numbers.
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