1. The problem statement, all variables and given/known data Which of the following reactions could not occur because they would violate conservation of charge (n=neutron, p=proton, e- = electron, he^2+ = the helium nucleus) a) p -> n + e- b) n -> p + e- c) He^2+ + He^2+ -> He^2+ p + n d) p + He^2+ -> He^2+ + e- e) p + p + e- -> p + p + p + X^-1 + Y^-1 + n (where x and y are various particles having the charges indicated). cant figure out how to solve these, please help solve them as I learn best by example. cant find an example in my book and I have no idea how to even attempt to solve it. thanks! :) 2. Relevant equations n/a 3. The attempt at a solution n/a No idea.