A sample’s spectrum exhibits two partially overlapping absorption peaks: one broad…

CHEMISTRY · Subjective · A Level · Chemistry · Organic analysis and spectroscopy · Organic analysis and spectroscopy

Problem

A sample’s spectrum exhibits two partially overlapping absorption peaks: one broad peak centered at

1.5\,\mu\text{m}

(full width at half-maximum ≈ 0.2 µm) and a narrower peak centered at

550\,\text{nm}

(FWHM ≈ 50 nm). Determine the type of transition responsible for each peak and briefly justify your choices based on the given wavelengths.