Describe the action that causes an emission spectrum, including: The action that

Question

Describe the action that causes an emission spectrum, including:

The action that needs to be taken to create the emission spectrum.

Describe energy levels in atoms.

Explain what happens to an electron at the atomic level in an atom experiencing absorption.

Explain how spectra allow astronomers to determine the chemical composition of stars and nebulae.

Explain why dark matter is called dark and how it differs from ordinary matter.

Describe the effects of the propagation of light in various astrophysical environments.

Explanation / Answer

Ans....The action tha causes emission spectrum, each emission spectrum is unique to the element, we can think of each of these spectra as being like the fingerprint of each element,electrons are promoted to a higher energy orbital.Emission line is produced by an atom in a excited energy state the electron is not in as low an energy orbit as possible.

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