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What happens when a electron moves from the first energy level to the second??
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What happens when a electron moves from the first energy level to the second??

User Daniele Ceglia
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The atom absorbs or emits light in discrete packets called photons, and each photon has a definite energy. Only a photon with an energy of exactly 10.2 eV can be absorbed or emitted when the electron jumps between the n = 1 and n = 2 energy levels.
User Laurent R
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the atom absorb the light in the discrete packet in the photons
User Jianweichuah
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