Problem 3ii
Page 295
Section: Problems by Topic
Chapter 7: The Quantum-Mechanical Model of the Atom
Given information
Given the electromagnetic radiations, a. radio waves b. microwaves c. infrared radiation d. ultraviolet radiation and the order of increasing energy per photon have to be determined.
Step-by-step explanation
Electromagnetic radiations are waves with electric and magnetic fields oscillating mutually perpendicular to each other in space. All the electromagnetic waves are characterized by specific wavelengths, frequencies and energies.
Planck's equation gives the mathematical relation between the amount of energy per photon of the electromagnetic radiations and its wavelength.
Planck's equation:
Where,
From Planck's equation, it is evident that there exists an inverse relationship between energy per photon and the wavelength of the light. As the wavelength increases, the energy per photon decreases.