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प्रश्न
How do electrons occupy energy levels in a single isolated atom?
विकल्प
Discrete, well-defined energy levels
Closely spaced levels collectively forming an energy band
Overlapping valence band and conduction band
An energy region with no allowed states
MCQ
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उत्तर
In a single isolated atom, electrons occupy discrete, well-defined energy levels. The levels are like separate rungs of a ladder.
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