बोहर के परमाणु मॉडल के दूसरे अभिगृहीत (कोणीय संवेग का क्वांटमीकरण) को किस सिद्धांत के आधार पर समझाया जा सकता है?

In the first excited state of a hydrogen atom, the energy of its electron is -3.4 eV. The radial distance of the electron from the nucleus in this state is approximately: (Take 1 eV = 1.6 × 10-19 J, e = 1.6 × 10-19 C, and 14πε0 = 9 × 109 N m2/C2)

If the electron in the ground state (first orbit) of a Hydrogen atom absorbs 12.1 eV of energy, it will jump to which orbit?