Types of emissions and radiation

For revision/homework this week, make sure that you know what the three types of radiation and emissions are (alpha, beta, gamma) as well as what particles are involved in each one.  For practice, try this question set:

1.       A polonium nucleus with 84 protons and 126 neutrons is unstable and decays by emitting an alpha particle.

a)        How many protons are in the original nucleus?                          ………………

b)        How many neutrons are in the original nucleus?                        ………………

c)        How many protons are in the product nucleus?                          ………………

d)        How many neutrons are in the product nucleus?                         ……………...
e)        What is the mass number of an alpha particle?                          .......................