Explanation:- Atomic number (Z) is defined as: >>“The total number of protons in the nucleus of an atom is called atomic number”. All atoms of an element have the same number of protons and electrons. >>“The total number of protons in the nucleus or electrons revolving around the nucleus of an atom”. Example: For instance, Hydrogen has the Atomic number(Z) 1. Helium has the atomic number 2. Oxygen has the atomic number 8. | Note | Atomic number is represented by “Z”. And some ppl don’t consider the 2nd definition it’s upto u to do both or the standard one.
