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When a hydrogen atom absorbed a photon and the electron is excited, why the election's kinectic energy decreases instead of increases? ​
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When a hydrogen atom absorbed a photon and the electron is excited, why the election's kinectic energy decreases instead of increases? ​

User Norah
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The electrons in an atom can only occupy certain allowed energy levels. ... Only certain energy levels are allowed, so only certain transitions are possible and hence specific wavelengths are emitted when an electron drops to a lower energy level

Step-by-step explanation:

User Giovanni Caporaletti
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