What term is used for the electrons in the outermost shell or energy level

Now consider the reaction when 45.0 g naoh have been added. what amount of naoh is this, and what amount of fecl3 can be consumed by it?

Which orbitals form a pi bond? a.the s orbital and three p orbitals b.the s orbital and two p orbitals c.overlapping p orbitals d.overlapping hybrid orbitals

This element exists in adundance in the sun.explain how you would go about capturing sunlight.would this captured sunlight contain any of the element?