In a hydrogen atom, when an electron falls from the fifth to the second energy level it emits a photon of violet light with a frequency of 6.905 x 10's! Calculate the energy of this photon.

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The atomic nucleus made up from protons (yellow) and neutrons (blue) and held together by nuclear forces. nuclear forces (also known as nuclear interactions or strong forces) are the forces that act between two or more nucleons. they bind protons and neutrons (“nucleons”) into atomic