The controlled reaction between deuterium (
) and tritium (
) has involved ongoing research for many years. The reaction may be summarised as
where 
.
Binding energies per nucleon are shown in the table below.
Suggest why binding energy per nucleon for the neutron is not quoted.
Calculate the mass defect, in 
, of a helium 
nucleus.
State the name of the type of reaction illustrated by this nuclear equation.
Determine the binding energy per nucleon, in 
, of tritium ().
.
.
