The activated complex is the intermediate that is formed between the states of reactants "F" and products "G".
Letter A represents the activation energy of the reaction, that is the difference in potential energy between the reactants "F" and activated complex "B".
Letter C represents the enthalpy change of the reaction, that is the difference in potential energy between products "G" and reactants "F".
Letter D represents the potential energy of products "G".
Letter E represents the potential energy of reactants "E".
<span>Assuming that there are 36 strontium and 24 phosphate, there
aren’t any equal cations and anoins because in theory only one ionic bond is
formed by a strontium with each phosphate ion. To the point that a cation will
eventually have an excess.</span>