How many electrons has an atom with atomic number 12?
Z the atomic number, specifies the number of protons, positively charged nuclear particles, and also if Z = 12 , then we know that the element is magnesium. But if we specify a neutral atom, there must be equal numbers of positive charges, nuclear protons, and negative charges, electrons, that are conceived to orbit around the nuclear core. Magnesium commonly forms the M g 2 + ion.
