The photoelectric work function for a certain metal is 221.8 kJ/mol. If the metal absorbs a photon with a wavelength of 5.0 x 102 nm, and an electron is ejected, what is the kinetic energy of the ejected electron?           (A) 4.0 x 10–19 J          (B) 3.8 x 10–19 J          (C) 7.7 x 10–20 J          (D) 2.9 x 10–20 J

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Q: The photoelectric work function for a certain metal is 221.8 kJ/mol. If the metal absorbs a photon…

A:

Q: A certain light wave has a measured frequency of 4.15 x 1014 s-1. What is the wavelength of this…

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Q: Compare the wavelengths of an electron (mass 9.11X10⁻³¹kg) and a proton (mass 1.67X10⁻²⁷kg),…

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Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.