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Electronic Spectroscopy: Ultraviolet and Visible Light

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Electronic Spectroscopy: Ultraviolet and Visible Light

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Questions and Answers

What is the result of absorbing UV-vis photons by a molecule?

Vibration of the molecule

Breaking of the molecule's chemical bonds

Emission of light by the molecule

Electronic excitation of the molecule (correct)

What is the term for any group of atoms that absorbs light?

Chromophore (correct)

Electron receptor

Photon absorber

Molecular orbital

What is the process of a transition from a higher energy level to a lower energy level with energy transfer to the radiation field?

Nonradiative decay

Emission (correct)

Electromagnetic transition

Absorption

What is the energy range of microwave radiation?

10-6 to 10-3 J/mol (C) Signup and view all the answers

What is the term for a transition from a higher energy level to a lower energy level without emitting radiation?

Nonradiative decay (C) Signup and view all the answers

What is the energy range of ultraviolet radiation?

10-9 to 10-7 J/mol (D) Signup and view all the answers

What is the process of a transition from a lower energy level to a higher energy level with energy transfer from the radiation field?

Absorption (B) Signup and view all the answers

What is the term for the molecular orbital that has the highest energy among occupied molecular orbitals?

HOMO (C) Signup and view all the answers