One evening last summer, as I strolled along the promenade in Limbe, a small, scenic port town in southwestern Cameroon, I was stopped by a well-dressed young man who greeted me warmly and took me by the hand.
Phosphorus has 3 shells. The outer shell contains 5 electrons. The electronic configuration is :- <br /> 1s2, 2s2, 2p6, 3s2, 3p3.
First energy shell can contain a maximum of 2 electrons. 2. All other shells can contain a maximum of 8 electrons (there are exceptions) An atom is most stable when the outer shell contains a full 8 electrons =.