A lithioum atom has electron Assume the following simple picture of the atom Two electron move close to the nucleas making up a spherical cloud in a circular orbit Bohr's model can be used for the motiobn of this third electron but`n = 1` state are not andiable is it calculate the ionzation energy of lithium in ground state using the above picture

Explanation

In this picture the third electronmove in the field of a totalcharge`+5a- 2a= +e`Thus the energies are the same as that if hydrogen atoms The lowest energy is
`E_(2) =(E_(1))/(4) = (-13.6ev)/(4) = -3.4eV`
Thus, the ionitation energy of the atom in this picture is `3.4eV`