Copper has a work function () of 4.70 eV. What is the longest wavelength of light, in nm, that will cause the ejection of electrons? (1 eV=1.6 × 1019 J)

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A: Applying de-Brogalie equation ∆E= hc/lemda     = 1242 /lemda  When energy is in the eV .

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A: Given frequency = 1.11×10¹⁵ s-¹  Kinetic energy = 3×10-¹⁹ J  We have to find work function

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Q: When a metal was exposed to photons at a frequency of 1.19 × 10'5 s-', electrons were emitted with a…

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Q: 3. Photoelectric effect a. Mo metal must absorb radiation with a minimum frequency of 1.09 x 1015…

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Q: Iron has a work function (0) of 4.50 eV. What is the longest wavelength of light, in nm, that will…

A: W = W° + K.E  W° = WORK FUNCTION

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A: Kinetic energy = h22λ2m where wavelength = λ  mass of electron = m Plank's constant = h

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Q: The energy of the electron in the lowest level of the hydrogen atom (n=1) is -2.179×10-18 J.What is…

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Q: Question 3: A hydrogen atom in the ground state interacts with a photon with a wavelength of 3.650 x…

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Q: Consider the four scenarios involving visible light. In scenario A, visible light has a wavelength…

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Q: Consider the four scenarios involving visible light. In scenario A, visible light has a wavelength…

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: Platinum has a work function of 6.35 eV. What is the longest wavelength of light that will cause the…

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Q: The work function for a metal is 208.4 kJ/mol. If a beam of visible light with wavelength equal to…

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Q: the energy of a photon of black light is 5.51 x 10-19 J. What is the wavelength of black light in…

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Q: What is the energy, in Joules, of a photon that has a frequency of (6.7x10^14)? Note: Planck's…

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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.