A photon with energy is absorbed by a molecule

CHEMISTRY · Single correct · AP · Chemistry · Properties of Substances and Mixtures · Properties of Substances and Mixtures

Problem

A photon with energy 4.0×10−19 J4.0\times10^{-19}\,\text{J} is absorbed by a molecule. Which of the following transitions is the absorption most likely to cause? (Use h=6.63×10−34 J sh=6.63\times10^{-34}\,\text{J\,s} and c=3.00×108 m s−1c=3.00\times10^{8}\,\text{m\,s}^{-1} if needed.) (a) A vibrational transition of a polar bond (b) Ionization of the molecule by removing a valence electron (c) An electronic transition producing an excited electronic state (d) A rotational transition that changes the JJ quantum number by 1

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