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Spectroscopy

Q1: Why are rotational transitions of little use to a spectroscopist?

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

ANS:C - Because, in liquids and solids, spectral lines corresponding to rotational transitions are broadened as the result of molecular collisions and other interactions

Explain the answer.



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