Physics (AS & A Level) · Oct / Nov 2017 · Paper 11 · Question 39

An astatine nucleus has a nucleon number of 218 and a proton number of 85. It decays to form a polonium nucleus, emitting a β– particle and an α-particle in the process. What are the nucleon number and the proton number of this polonium nucleus?

1. A214 83
2. B214 84
3. C215 83
4. D216 82

As printed in the paper