The trends shown in the given figure reflect the tendency of _._ A__ elements to form ions that will have an identical electron configuration to that of a noble gas. The elements of groups 1A,2A, and 3A shown in the figure _. B__ electrons to form __C_ charged ions. The elements of groups 5A,6A, and 7A normally _.. D_ electrons to form _. E charged ions. The F series represents the filling of core orbitals, and the number of _G_ electrons is mostly constant