1. The problem statement, all variables and given/known data 27-Al disintegates to form 29-Al, by what emission this is possible? a)alpha b)beta c)positron d)proton answer given- beta 2. Relevant equations beta results in atomic no. increase,alpha results in both mass &no. decrease,positron results in decrease in no.,proton results in decrease by 1 in both. 3. The attempt at a solution the answer i think given is wrong as we want a paricle like neutron to make it happen (which is not in the options) are answers and options wrong or just my basics are being tested?