Compare an electrically neutral atom of oxygen and an isotope of oxygen. in own words

On a distance vs time graph the line of an object at rest is a

What is the formula that this ionic compounds could form sr2+p3-o2-

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.