Spectroscopic Vibration-Rotation Transitions in the P- and R-Branches of the High-Resolution

question 17

Multiple Choice

Spectroscopic vibration-rotation transitions in the P- and R-branches of the high-resolution infrared spectrum of hydrogen iodide, HI, are observed to be separated by a wavenumber of 6.37 cm^-1. Calculate the length of the bond of a hydrogen iodide molecule.

• A) 1.03 Å
• B) 10.3 Å
• C) 0.728 Å
• D) 7.83 Å

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