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Spot the one that does not belong

Exercise and reference answers

Questions
  1. Items
    1. Stationary orbit
    2. Embedded electron
    3. Three postulates
    Odd item
    Embedded electron
  2. Items
    1. Spiralling electron
    2. Predicted instability
    3. Stable orbit
    Odd item
    Stable orbit
  3. Items
    1. Continuous band
    2. Line spectrum
    3. Isolated lines
    Odd item
    Continuous band

Explanation

One belongs to a different model. Source: syllabus Physics, Ch 12 Atoms.
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