1. when alpha particles are emitted, the atomic number decreases by2, but is the new element charged due to more number of electrons? If not, what happens at the nuclear level? Please, Explain it simillarly about beta particles. 2.when describing the emission of beta particles, we say that 1n0 -----------> 1p+1 + 0e-1 but at the time of describing the nuclear stability, we say that 1n0 -----------> 1p+1 + 0π-1 SO are the pion and the electron one and the same? or does the neutron undergoes different reactions at different times? If yes, how does the neutron come to know, which reaction to undergo and when? If not, then what does exactly happen? 3. At the time of gamma radiations, neither atomic nor mass no. of an atom change, so what is the benefit or cause for any radioactive atom to emit gamma radiations? Does the radiation causes it to stabilize itself by some other way? Please answer all these questions and you will help me understand all the concepts clearly.