Question

The absorbance of visible light or UV light by a compound and the subsequent release by that compound of longer wavelength light is known as _____________.

A) fluorochrome
B) luminescence
C) fluorescence
D) incandescence
E) phosphorescence

Answer 1

Fluorescence is the process in which a compound absorbs visible or UV light and releases longer wavelength light. It occurs when specific compounds absorb light of a certain energy and emit light of lower energy. The absorbed light is called the excitation wavelength and the emitted light is called the emission wavelength.

Step-by-step explanation:

Fluorescence is the absorbance of visible or UV light by a compound and the subsequent release of longer wavelength light.

This process occurs when a compound, usually a heterocyclic aromatic molecule, absorbs light of a specific energy and emits light that is lower in energy (larger wavelength) than the absorbed light. The absorbed light is called the excitation wavelength and the emitted light is called the emission wavelength.