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The balmer series for the H-atom can be ...

The balmer series for the H-atom can be ob-served

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B, D
Balmer series for hydrogen atom can be observed by measuring the frequencies of light emitted due to transitions between excited states and the first excited state (n=2). In these measurements, we would find the sequence of frequencies will higher frequencies getting closely packed. Choices (a) and (d) are correct.
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PRADEEP-ATOMS AND NUCLEI-NCERT Multiple choice (II) questions 11
  1. The balmer series for the H-atom can be ob-served

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