question_answer 34)

  When a nucleus in an atom undergoes a radioactive decay, the electronic energy levels of the atom (a) do not change for any type of radioactivity (b) change for a and p radioactivity but not for -radioactivity (c) change for -radioactivity but not for others (d) change for -radioactivity but not for others

Answer:

  (b)As an alpha particle carries 2 units of positive charge, and a beta particle carries one unit of negative charge and  (particle) carries no charge, therefore electronic energy levels of the atom change for  and decay, but not for decay . choice (b) is correct.