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[Phy] [Atomic World] The first excitation energy and the ionization energy of ...

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[Atomic World] The first excitation energy and the ionization energy of ...

[Atomic World] The first excitation energy and the ionization energy of a certain atom are 21.2 eV and 28.8 eV respectively. An electron of energy 22.4 eV strikes the atom at the ground state. What happens to the atom?

A. The atom remains at the ground state.
B. The atom is excited to the first excited state.
C. The atom is excited to the second excited state.
D. The atom is ionized

Thanks !!!
   

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B.
The electron will transfer 21.2eV energy to the atom, so the atom is excited to the first excited state.
p.s. The electron will leave with energy 1.2eV.

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引用:
原帖由 antonyluk 於 2016-3-23 11:44 AM 發表
B.
The electron will transfer 21.2eV energy to the atom, so the atom is excited to the first excited state.
p.s. The electron will leave with energy 1.2eV.
Will it be possible for the electron to transfer to its 2nd excitation state ?

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The question doesn't provide any information about the 2nd excited state, so B is clearly a better answer than C.

Remember, the principle of doing multiple choice question is "choose the best answer".

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ok thanks~~

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