Question

Which statement below describes an atomic emission spectra?

Answer 1

Answer:

The  statement that describes an atomic emission spectra is:

D) A series of colored lines that correspond to photons of specific energies emitted by a heated element.

Explanation:

Atomic emission is the process by which a quantum mechanical state of greater energy of a particle becomes a lower one through the emission of a photon, resulting in the production of light. The frequency of the emitted light is a function of the energy of the transition. Since the energy must be conserved, the difference in energy between the two states is equal to the energy that the photon takes. The energy states of transitions can lead to emissions in a wide range of frequencies.

Light consists of electromagnetic radiation of different wavelengths. Therefore, when the elements or their compounds are heated in a flame or by an electric arc, they emit energy in the form of light. The analysis of this light, with the help of a spectroscope, gives us a discontinuous spectrum. A spectroscope or a spectrometer is an instrument that is used to separate the components of light, which have different wavelengths. The spectrum appears in a series of lines called the spectrum of lines. This linear spectrum is called the atomic spectrum when it originates from an elemental atom. Each element has a different atomic spectrum. The production of line spectra by the atoms of an element indicates that an atom can radiate only a certain amount of energy. This leads to the conclusion that the united electrons cannot have any amount of energy, but only a certain amount of energy.

Answer 2

ANSWER- B

Atomic emission spectra are produced when excited electrons return to the ground state. The emitted light corresponds to energies of the specific electrons.