When so much solute is added that no more will dissolve, what type of solution has been created? need asap

The simplest answer and the correct one is saturated. You can try this at home to see what it looks like. Take a  glass and fill it to the 1/2 full mark. Make sure the water is on the coolish side. Start putting measured amounts of salt in the water. Do this until you see salt on the bottom of the glass. The solution is now saturated.

Empty the glass. Put the same amount of water in the glass but make it much  warmer. Put the same amount of salt in the glass. It should not be saturated -- that is there should be no salt on the bottom.

So temperature determines saturation. But more important, you should get an idea of what saturation is.

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

"the periodic table is arranged in order of atomic number."