A nucleus makes a transition from one permitted energy level to another level of lower energy .

name the region of the electromagnetic spectrum to which the emitted photon belongs.What is the order of its energy in electron volts??

Hi Anandita!

As the transition of the nucleus resulted in photon emission, the emitted ray is gamma ray. Therefore, the emitted photon belongs to the gamma ray region of the EM spectrum. The energy of the gamma rays are in the order of MeV.

Cheers!!

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