What observation led marie curie to discover radium and polonium?

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.

Atoms contain subatomic particles called protons and neutrons. when these protons and neutrons spilt, a lot of energy is released

Describe the hybridization of each carbon and nitrogen atom in each of the following structures