(a)[2]
Define what is meant by nucleon number.
(b)[2]
Give the electronic structure for each atom and ion shown below. Na P$^{3-}$
(c)[1]
State one medical application of radioactive isotopes.
(d)[2]
What is meant by relative atomic mass?
(e)[2]
Suggest why chlorine's relative atomic mass is not a whole number.
(f)[3]
Describe the bonding in aluminium. In your answer, include a labelled diagram and any suitable charges.