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jc09
Apr15-11, 01:35 PM
1. The problem statement, all variables and given/known data
Sorry charge conservation is not really part of the problem.

Question I'm stuck on is:
What is the process of decay for Be7 to Li7


2. Relevant equations
Qb+=[M(Be)-M(Li)-2Me]c2
Qb-=[M(Be)-M(Li)]c2
Qe=[M(Be)-M(li)]c2-Bn




3. The attempt at a solution
I know that t is not beta minus decay because the energy is negative. I'm how to figure out whether its electron capture or beta plus decay. The only information given is the mass of Be and Li