The periodic table displays the symbols and 1 of the elements along with information about the structures of their
2 . The Group 1A elements are called 3 , and the
Group 2A elements are called 4 . The elements in Groups 1A
through 7A are called the 5 . The nonmetals of Group 7A
are 6 , and the 7 make up Group 8A. Between Groups
2A and 3A, there are 8 in periods 4 through 7 and 9
in periods 6 and 7.
The atoms of the noble gas elements have their highest occupied
s and 10 sublevels filled. The highest occupied s and p
sublevels of the representative elements are 11 .

Bthe s the

Answerthis solution will not form a precipitateexplanationsolubility equilbrium:         pbf₂(s)  ⇄ pb²⁺(aq) + 2 f⁻(aq)the solubility product expression is    (we exclude solids from the equilibrium expression).now suppose we have the trial ion product q, which we can define as    then, we can interpret  q as the product of the concentration of the ions that we have and ksp as the product of the ion concentrations that are needed to form a saturated solution.if q > ksp, then that implies that there will be a surplus of ions that exceed the amount that is required to form a saturated solution. a precipitate will then form (the precipitate continually  forms until the surplus ions are removed and q is decreased to ksp's value).if q = ksp, the saturated solution that forms is barely saturated and the precipitate will be minimal.if q < ksp, then the ion concentration will not be enough to form a saturated solution (so no precipitate).using our information, we calculate the trial ion product:     since q = 2.7  × 10⁻⁸ < ksp =  4  ×  10⁻⁸, a precipitate will not form.

I'm sorry i cant you if you don't list the elements : (