Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074



Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

Photoelectron spectroscopy is s1milar to the photoelectric effect (Section 6.2). However, in the photoelectric effect, electrons are ejected when light strikes the surface of a(n)

Interpretation Introduction


The photoelectron spectroscopy should be explained with the given statement of photoelectric effect.

Concept Introduction:

Photoelectron spectroscopy: This is to energy measurement of electrons emitted from solids, gases or liquids by the photoelectric effect, in order to determine the binding energies of electrons in a substance.   

The key to understanding PES is that all of the ejected electrons results from bombarding the atom with photons of the same energy (hv). The energy goes into ejecting the electrons from the atom corresponding to the ionization energy (IE) of the electron with the remainder going into kinetic energy of the electron. The formula of photoelectron spectroscopy hv= IE + KE(electron)


The photoelectron spectroscopy is a basic method in varies filed of chemistry, it is measured for different orbital energy in atoms and molecules.

The process of ejection of electron by the action of photon on a molecule can be represented as follows,


The photon with surface energy (hν) can cause an electron to be ejected from the atoms. If the photons has energy that is above the threshold required for ionization, the excess energy to the ejected electrons

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