MCQ
A hypothetical atom has only three energy levels. The ground level has energy, $E_1 = - 8\, eV$. The two excited states have energies, $E_2 = - 6\, eV$ and $E_3 = - 2\, eV$. Then which of the following wavelengths will not be present in the emission spectrum of this atom? .............. $nm$
- A$207$
- ✓$465$
- C$310$
- D$620$

