Question

why is the atomic number the basis of modern periodic law​

Answer 1

ANSWER

The atomic number the basis of modern periodic law. It is because:

1. This classification is based on the atomic number which is a more fundamental property of the elements.
2. This classification is based on the atomic number which is a more fundamental property of the elements.Since this classification is based on the atomic number and not on the atomic mass, the position of placing isotopes at one place is fully justified.
3. This classification is based on the atomic number which is a more fundamental property of the elements.Since this classification is based on the atomic number and not on the atomic mass, the position of placing isotopes at one place is fully justified.It is easy to remember and reproduce.
4. The systematic grouping of elements into four blocks; s, p, d and f has made the study of the elements more simple.
5. The position of some elements which were misfit on the basis of atomic mass is now justified on the basis of atomic number. For example, argon precedes potassium because argon has atomic number 18 and potassium has 19.

THANKS

Answer 2

◆The Modern Periodic Law states, 'Physical and chemical properties of elements are periodic functions of their atomic numbers.' Since the properties of an element depend on its electronic configuration, thus electronic configuration of elements is intrinsic to the Modern Periodic Table.

That's why atomic number the basis of modern periodic law.