Question

Atomic number is considered to be more appropriate parameter than atomic mass classification of elements in the periodic table why

Answer 1

atomic mass is sum of protons/electron and neutrons
but atomic number depends on only electron/proton
and also the reactivity of element is determined by no. of electron
so atomic number is important than mass
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Answer 2

Here is your answer

Mate!!

Reason:

=>The properties of the element's could be predicted more precisely when element's are arranged on the basis of increasing atomic number.

      The atomic no. = The no. of proton's = no. of electron's

=>It is the no. of electron's which decide the properties of an element.

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