Two things.
First of all, aren't beta particles electrons? Why, then are they emitted from the NUCLEUS, as states Q38 of M/J 2008, P1? :S
Secondly, O/N 2005, Q36, P1, I know you said that a neutron splits to form an electron and proton, but why can't we use the simple beta emission formula here. The
-1B particle, where A remains A, and Z + 1? :S Isn't that formula for unstable nuclei too? Because, a stable one doesn't emit anything.