A compound formed when atoms of two or more different elements share electrons

Using a value of ksp = 1.8 x 10-2 for the reaction pbcl2 pb+2(aq) + 2cl -(aq). if the value of ksp was determined to be only 1.2 x 10-2: too much solid has dissolved. additional precipitate is forming. the solution is unsaturated. the ions are now combining to reduce their concentrations.

Can someone me with 6 to 10 plz this is for masteries test.

Which of the following are in a chemical family a. ca, sc, k b. cu, ag, au c. so, ge, sb