Question

Why can line spectra be used as fingerprints to identify gases?

Options

• All gases absorb radiation of all wavelengths.

• Every element has the same spectral pattern.

• Every element has a distinct spectral pattern.

• White light always appears as bright lines on a dark background.

Answer 1

Every element has a distinct spectral pattern. This unique pattern allows line spectra to be used as fingerprints to identify gases.