Question

what is the meaning of periodic number​

Answer 1

The number of protons or electrons normally found in an atom of a given chemical element.

I hope this will help you

Answer 2

Hello user...

If your question is related to periodic table then..

All elements of a period have the same periodic number . for example : period 2 has 8 elments having similar no. shells ...

If your question is related to atomic number ...

Then the number of protons present in the nucleus of an Atom is called atomic number..

Hope this helps you ❤❤❤