Cell: Structure and Functions
The nucleus decays by emission. Write down the - decay equation and determine the maximum kinetic energy of the electrons emitted. Given that:
Solution: The beta decay equation is as shown.
Here, the masses used are masses of nuclei and not of atoms. Note: has been cancelled.
931.5 MeV MeV.
The maximum kinetic energy of the electron (max ) = Q = 4.37 MeV.