In the Periodic Table, the atomic number is equal to the number of

In the Periodic Table, the atomic number is equal to the number of PROTONS  PER ATOM or NUMBER OF ELECTRONS PER NEUTRAL ATOM.

Explanation:

Different elements have different atomic numbers; therefore, atoms of different elements contain different numbers of protons (and electrons). Oxygen has the atomic number 8; its atoms contain 8 protons and 8 electrons. Uranium has the atomic number 92; its atoms contain 92 protons and 92 electrons.

The relationship between atomic number and the number of protons or electrons can be stated as follows:

Atomic number

= number of protons per atom

= number of electrons per neutral atom