What does assign elements atomic number represent?

An element's atomic number represents the number of protons found in the nucleus of an atom of that element. This number is unique to each element and determines its identity; for example, hydrogen has an atomic number of 1, while carbon has an atomic number of 6. The atomic number also influences the element's chemical properties and its position on the Periodic Table. In neutral atoms, the atomic number also equals the number of electrons, balancing the positive charge of protons with the negative charge of electrons.