For the following equilibrium involving only PbI2 dissolved in liquid water, if the lead concentration is 3.6×10−7 M and Ksp=7.5×10−11, will a precipitate form?

i do not get it   at all

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.

i think tornado but not 100%