Answer :
Final answer:
This detailed answer explains how to calculate the frequency of absorbed photons, electron energy at specific levels, and possible emission frequencies in hydrogen atoms.
Explanation:
A) The frequency of the absorbed photon can be calculated using the formula E = hf, where E is the energy difference between the initial and final states, h is the Planck constant, and f is the frequency of the photon.
B) The energy of the electron at the third energy level (n=3) can be calculated using the formula E = -13.6/n^2 eV, where n=3.
C) For the electron to come back to its ground state, it can emit photons with frequencies corresponding to the energy differences between the higher energy levels and the ground state.
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