Atomic mass is not useful to construct the periodic table. Give reasons with an example. OR Why is atomic number is more useful than atomic mass to classify the elements?

Atomic mass is not useful to construct the periodic table. Give reasons with an

example. OR Why is atomic number is more useful than atomic mass to classify the

elements?
by

1 Answer

Answer :

Isotopes of an element have same atomic number but different atomic mass. They have

to be placed in four places. This creates confusion because other elements occupied

these positions.
by

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