Some of the following processes cannot happen because they don't conserve properties that must be conserved. Others are possible.

For each process answer "allowed" or indicate ALL quantities it does NOT conserve, chosen from: "energy", "electric-charge", "baryon-number", "lepton-number", "electron-number", or "muon-number".

1)Neutron decay to a proton, electron, and anti electron-neutrino?

2)Neutron decay to a proton, electron, and electron-neutrino?

3)Proton decay to a neutron, anti-electron, and electron-neutrino?

4)Proton decay to a neutral pion, anti-electron, and electron-neutrino?

5)Collision of an electron and anti-electron yielding a proton and antiproton?

6)Collision of an electron and anti-electron yielding 2 neutrons?

7)Collision of an electron and anti-electron yielding 10 photons?

OPTIONS FOR ALL QUESTIONS:

a) allowed

b) energy

c) electric-charge

d) baryon-number

e) lepton-number

f) electron-number

g) muon-number