Which of the following is not a true statement about atomic structure?

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    Atoms do not always remain in their lowest energy state.
     Transitions can occur either up or down in energy from the ground state.
     An atom is in an excited state if it has at least one electron at a greater than normal distance from its parent nucleus.
     Transitions between two energy levels can occur only at one specific photon energy.
     An ion is an atom that has either gained or lost electrons.
asked Sep 20, 2012 in Astronomy by anonymous
    

1 Answer

0 votes
Transitions can occur either up or down in energy from the ground state.
answered Sep 22, 2012 by SkyStar ~Expert~ (2,855 points)

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