Question

the energy (in joule) of the emitted photon when an electron in Be³+ ion returns from n=2 level to ground state is?​

Answer 1

So, you know your energy levels to be n = 5 and n = 3. you calculate the wavelength of the photon emitted by the electron during this transition. 1λ=R⋅(1n2final−1n2initial).

The number of photons emitted:

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Learn more about energy and photon:

1. When an electron of an atom returns from an excited state to the ground state, it emits energy in the form of a photon. How does the change in energy level compare to the energy of the emitted photon?

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2. + Energy of photons that need to be absorbed by He+ ion to excite electrons from ground state to third energy level is​

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