How much momentum does the photon carry off

Reference no: EM13673240

A hydrogen atom at rest in its first excited state emits a photon and ends up in the ground state

1. How much momentum does the photon carry off?

2. How much kinetic energy does the hydrogen atom acquire? Does this energy require to be taken into account in determining the energy (and hence the frequency) of the emitted photon? Why or Why not??

Reference no: EM13673240

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