Determine the nuclear charge and the number of protons, electrons, neutrons in the atoms

Determine the nuclear charge and the number of protons, electrons, neutrons in the atoms of the element magnesium nitrogen of the vest.

The numbers of protons and electrons in an atom are equal and correspond to the ordinal number of the element in the periodic table. The charge of the nucleus is positive, it is also quantitatively determined by the number of the element. The number of neutrons is equal to the difference between the atomic mass of the element (indicated in the table) and the number of protons. So, in a magnesium atom there are 12 protons, electrons and neutrons, the charge of the nucleus is +12. The nitrogen atom has 7 protons, electrons, and neutrons each, the charge of the nucleus is +7. The iron atom has 26 protons and electrons, 29 neutrons, the charge of the nucleus is +26.