(iii) The work function for scandium is 5.61 x 10-19 J. Calculate the wavelength ofthe lowest energy photon that would cause emission of electrons from ascandium surface.(iv) Irradiation of scandium with 335 nm light results in electrons emitted with akinetic energy of 3.20 x 10-19 J. Calculate the de Broglie wavelength of theemitted electrons. (c) The kinetic energy, K₁, of electrons emitted from a metal surface after irradiationwith UV light of wavelength λ is given by:hcKg = -4where his Planck's constant (6.626 x 10-4 Js), c is the speed of light in a vacuum(2.99 x 108 m s¹), and is the work function of the metal surface.In a specific experiment, light with a wavelength of 266 nm was used to irradiate acadmium (Cd) metal surface.

In (iii) Given Work function = 5.61 ×10-19 J We have to find the wavelength of the photon which…

Answered: The work function for scandium is 5.61…

The work function for scandium is 5.61 x 10-19 J. Calculate the wave he lowest energy photon that would cause emission of electrons f candium surface. with 335 pm light results in electrons emitt

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Chapter5: Electron Configurations And The Periodic Table

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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.

Question

(iii) The work function for scandium is 5.61 x 10-19 J. Calculate the wavelength of
the lowest energy photon that would cause emission of electrons from a
scandium surface.
(iv) Irradiation of scandium with 335 nm light results in electrons emitted with a
kinetic energy of 3.20 x 10-19 J. Calculate the de Broglie wavelength of the
emitted electrons.

(c) The kinetic energy, K₁, of electrons emitted from a metal surface after irradiation
with UV light of wavelength λ is given by:
hc
Kg = -4
where his Planck's constant (6.626 x 10-4 Js), c is the speed of light in a vacuum
(2.99 x 108 m s¹), and is the work function of the metal surface.
In a specific experiment, light with a wavelength of 266 nm was used to irradiate a
cadmium (Cd) metal surface.

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