Electron confined in a one dimensional box

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SUMMARY

The discussion focuses on determining the length of a one-dimensional box containing an electron, given its observed energy levels of 27 eV, 48 eV, and 75 eV. The relevant equation used is E = h²n²/(8mL²), where E represents energy, h is Planck's constant, n is the quantum number, m is the electron mass, and L is the box length. By recognizing that the energies correspond to different quantum states, participants conclude that the length of the box can be calculated by solving for L using the proportional relationship between energy and quantum numbers.

PREREQUISITES
  • Understanding of quantum mechanics principles, specifically the particle in a box model.
  • Familiarity with the equation E = h²n²/(8mL²).
  • Knowledge of Planck's constant and electron mass.
  • Basic algebra skills for solving equations.
NEXT STEPS
  • Research the implications of quantum confinement on electron behavior.
  • Learn about the significance of quantum numbers in quantum mechanics.
  • Explore the derivation of energy levels for a particle in a one-dimensional box.
  • Investigate applications of quantum mechanics in nanotechnology.
USEFUL FOR

Students studying quantum mechanics, physicists interested in quantum confinement, and educators teaching the particle in a box model.

tboyers
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Homework Statement


An electron confined in a one-dimensional box is observed, at different times, to have energies of 27 eV , 48 eV , and 75 eV .
What is the length of the box? Hint: Assume that the quantum numbers of these energy levels are less than 10.

Homework Equations



E=h^2n^2/(8mL^2)

The Attempt at a Solution


I tried using that equation to solve for length, but I don't know what energy levels these are at, so i can't seem to solve it.
 
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tboyers said:
I tried using that equation to solve for length, but I don't know what energy levels these are at, so i can't seem to solve it.
energy of the states are proportional to n^2/L^2 and you have energies for three states so can you find out L?
 

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