A simplified absorption spectrum of a diatomic molecule shows three distinct

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

Problem

A simplified absorption spectrum of a diatomic molecule shows three distinct, narrow peaks at the following wavenumbers: • 1.20 cm⁻¹ • 2.15 × 10³ cm⁻¹ • 4.7 × 10⁴ cm⁻¹ Which peak corresponds to a rotational transition? (a) 2.15×103 cm−12.15\times10^{3}\,\text{cm}^{-1} (b) 4.7×104 cm−14.7\times10^{4}\,\text{cm}^{-1} (c) 1.20 cm−11.20\,\text{cm}^{-1} (d) 1.20 cm−1 and 2.15×103 cm−11.20\,\text{cm}^{-1}\ \text{and}\ 2.15\times10^{3}\,\text{cm}^{-1}

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