Question

The emission spectrum of an element:

A. may be identical to the emission spectrum of another element.

B. is identical to its absorption spectrum.

C. may be identical to the absorption spectrum of another element.

D. is different from any other element's absorption spectrum.

Answer 1

B

The emission spectrum of an element is identical to its absorption spectrum.

Explanation:

This is because a quantum leap  of an electron of an atom from one lower energy level to a higher one results in the absorption of a specific wavelength of electromagnetic radiation. When the electron leaps back to the lower energy level, it releases the same wavelength of electromagnetic radiation. This is according to Bohr's theory. Every atom has a signature absorption and emission spectra that are used to identify it.

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