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When an electron makes a transition from its first quantum level to ground level, the energy difference is carried by the emitt...Question
When an electron makes a transition from its first quantum level to the ground level, the energy difference is carried by the emitted photon. In comparison, how much energy is needed to return an electron at ground level to the first quantum level?
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drwls
The same amount of energy is required. It can come from photon absorption or collision