133. A hydrogen like species (atomic number Z)
is present in a higher excitd state of quantum
number n. This excited atom can make a
transition to the first excited state by
successive emission of two photons of
energies 10.20 eV and 17.0 eV respectively.
Alternatively the atom from the same
excited state can make a transition to the
second excited state by successive emission
of two photons of energy 4.25 eV and 5.95
eV respectively. Determine the value of Z.