(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 Kε = π = $ 2 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. (1) Calculate the photon energy of the light used in the experiment, in Joules. (II) The work function for cadmium is 4.08 eV. Calculate the kinetic energy of the emitted electrons. [Note: 1 eV = 1.60 × 10-1⁹ J.] (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.

(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 Kε = π = $ 2 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. (1) Calculate the photon energy of the light used in the experiment, in Joules. (II) The work function for cadmium is 4.08 eV. Calculate the kinetic energy of the emitted electrons. [Note: 1 eV = 1.60 × 10-1⁹ J.] (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.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

It is interesting to speculate on the properties of a universe with different values for the fundamental constants.(a) In a universe in which Planck’s constant had the valueh =1 J s, what would be the de Broglie wavelength ofa 145-g baseball moving at a speed of 20 m s-1 ?(b) Suppose the speed of the ball from part (a) is known to lie between 19 and 21 m s-1. What is the smallest distance within which it can be known to lie?(c) Suppose that in this universe the mass of the electron is1 g and the charge on the electron is 1 C. Calculate the Bohr radius of the hydrogen atom in this universe.
Please don't provide handwritten solution...
Suppose the average distance between the nucleus and the electron in a newly discovered 3s state is given by the ollowing equation: = ° v%47r³ dr, where the wavefunction /3, (r) = r · 3 Зар 27 Ino is independent of 0 and ø. Jse the integral x"e-kz dx = , to determine . Express your final answer in units of the Bohr radius ao and atomic number Z. In other words, if you get a final answer that is 2.3 times , enter 2.3 as your final answer.
1C.3
If an electron confined to a potential well of width 1.40 nm with infinite barriers on both sides transitions from n=10 to n=9, what will the wavelength of the emitted radiation be?
Assuming that the smallest measurable wavelength in an experiment is 0.170 fm0.170 fm , what is the maximum mass of an object traveling at 717 m⋅s−1717 m⋅s−1 for which the de Broglie wavelength is observable?
What wavelength of radiation has photons of energy 6.12×10−19 J ? Express your answer with the appropriate units.
An electron moves in a two-dimensional rectangular box with the dimensions, Lx= 5.00 Å and Ly =3.00 Å. Calculate the energy of the absorbed photon in cm"l when it makes a transition from the ground state to the 1st excited state.
What is the de Broglie wavelength of an oxygen molecule, O_(2), traveling at 521(m)/(s) ? Is the wavelength much smaller or much larger than the diameter of an atom (on the order of 100pm)?
Answer the following questions about a Blu-ray laser:(a) The laser on a Blu-ray player has a wavelength of 405 nm. In what region of the electromagnetic spectrum is this radiation? What is its frequency? (b) A Blu-ray laser has a power of 5 milliwatts (1 watt = 1 J s−1). How many photons of light are produced by the laser in 1 hour? (c) The ideal resolution of a player using a laser (such as a Blu-ray player), which determines how close together data can be stored on a compact disk, is determined using the following formula: Resolution = 0.60(λ/NA), where λis the wavelength of the laser and NA is the numerical aperture. Numerical aperture is a measure of the size of the spot of light on the disk; the larger the NA, the smaller the spot. In a typical Blu-ray system, NA = 0.95. If the 405-nm laser is used in a Blu-ray player, what is the closest that information can be stored on a Blu-ray disk? (d) The data density of a Blu-ray disk using a 405-nm laser is 1.5 × 107 bits mm−2. Disks have…
how many photons are there in a 7.00 mJ laser beam of wavelength 785 nm?
Calculate the wavelength (µm) of infrared light that has a frequency of 1.219 x 1012 s-1.