Answer:
The atomic number of phosphorous is 15. It has zero charges because it has equal number of protons and electrons i.e., 15 electrons.
Explanation:
As it is stated that phosphorus is found to be fourth element to the right of sodium in the periodic table, then the atomic number of phosphorus is confirmed to be 15. As the atomic number increases along the period. As the atomic number of phosphorus is 15, this means it has 15 number of electrons and from the mass number of phosphorus, it was found that it has 15 number of protons. So as the number of negative charges is equal to the number of positive charges in the atom, so phosphorus will be having a neutral charge at stable state. Thus, the atomic number of phosphorus is 15. It has zero charge because it has 15 electrons which is equal to the number of protons.
