Answer:

A , C , E

Explanation:

Answer:

Absorption spectra have several characteristics.

First, light is absorbed, which produces characteristic lines. This means that when a substance is exposed to light, it absorbs certain wavelengths of light, resulting in dark lines or bands in the spectrum.

Second, lines are dark on a visible light background. In an absorption spectrum, the absorbed wavelengths of light appear as dark lines against a background of continuous or white light.

Third, lines are produced by electrons being excited. When light interacts with a substance, it can cause the electrons in that substance to move to higher energy levels. These excited electrons then return to their original energy levels, emitting light of specific wavelengths, which appear as lines in the spectrum. However, it is important to note that this characteristic is not applicable to absorption spectra but to emission spectra.

Lastly, lines are produced from electrons returning to a lower energy level. In an absorption spectrum, the dark lines are produced when electrons in a substance return from higher energy levels to lower energy levels. The wavelengths of light that correspond to these transitions are absorbed, resulting in the characteristic lines in the spectrum.

To summarize, the characteristics of absorption spectra include light being absorbed, resulting in characteristic lines; these lines are dark against a visible light background; and they are produced by electrons returning to lower energy levels.

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