What is the frequency of radiation emitted by a photon of light if the energy released during its transition to ground state is 3.611 × 10-15 joules? (planck's constant is 6.626 × 10-34 joule seconds) 5.50 × 10-11 hz 2.39 × 10-50 hz 5.45 × 1018 hz 1.633 × 1027 hz

If i was feeling harsh today, I'd say the answer to your question is impossible to obtain due to the fact that photons do not emit radiation, photons ARE the radiation emitted. Though for the sake of it, here is the method...

The simple method:

E=hf

therefore f=e/h

f=(3.611x10^-15) / 6.63x10^-34)

5.45x10^18

The answer is orbit around nucleus