From the symbol 3115P, state: (i) mass number of phosphorus, (ii) atomic number of phosphorus, and (iii) electron configuration of phosphorus.
Nitrogen (atomic number = 7) and phosphorus (atomic number = 15) belong to group 15 of the periodic table. Write the electronic configuration of these two elements. Which will be more electronegative and why?
The electronic configuration of Phosphorus (atomic number 15) will be: