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Question
Why are rotational transitions of little use to a spectroscopist?
Options:
A .  Because the energy required to induce a rotational transition is so small that it cannot be measured
B .  Because rotational transitions are extremely rare
C .  Because, in liquids and solids, spectral lines corresponding to rotational transitions are broadened as the result of molecular collisions and other interactions
D .  All of the above
Answer: Option C
Answer: (c).Because, in liquids and solids, spectral lines corresponding to rotational transitions are broadened as the result of molecular collisions and other interactions

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