An atom has the energy level diagram as shown below: Suppose that the atom is in

Question

An atom has the energy level diagram as shown below:

Suppose that the atom is in the n-2 state. What energy photons could be observed in the emission spectrum?

1)Photons of energy 2.0, 3.0 and 4.0 eV.

2)Only a photon of energy 2.0 eV.

3)Photons of energy 3.0 and 4.0 eV.

4)Photons of energy 2.0 and 3.0 eV.

An atom has the energy level diagram as shown below: Suppose that the atom is in the n - 2 state. What energy photons could be observed in the emission spectrum? 1)Photons of energy 2.0, 3.0 and 4.0 eV. 2)Only a photon of energy 2.0 eV. 3)Photons of energy 3.0 and 4.0 eV. 4)Photons of energy 2.0 and 3.0 eV.

Explanation / Answer

2)Only a photon of energy 2.0 eV.

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