The reactions violate various conservation laws: (a) violates charge conservation; (b) violates lepton number conservation; (c) violates charge conservation; (d) violates baryon number conservation; (e) violates charge conservation.
Elementary particle interactions must obey certain conservation laws, and when these are violated, the reactions are considered forbidden. Let's analyze each reaction provided.
Charge conservation is violated in the reaction p + p → µ+ + e-, as the initial state has a total charge of +2 (from two protons) and the final state has a total charge of 0.
For the reaction - + p → p + +, assuming that the '-' represents a negatively charged particle and '+' represents a positively charged particle, the reaction violates lepton number conservation because leptons are not balanced in the process.
In the reaction p + p → p + +, again assuming '+' represents a positively charged particle, the reaction violates charge conservation, as the charge is not conserved between the initial and final states.
The reaction p + p → p + p + n violates baryon number conservation because there are three baryons in the final state and only two in the initial state.
Lastly, the reaction + p → n + 0 violates charge conservation if '+' represents a positively charged particle, as the initial charge (+1 from proton) is not equal to the final charge (0 from neutron).