{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

lecture23 - 5.61 Physical Chemistry 23-Electron Spin page 1...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
5.61 Physical Chemistry 23-Electron Spin page ELECTRON SPIN Experimental evidence for electron spin Compton Scattering (1921): AH Compton suggested that “the electron is probably the ultimate magnetic particle.” Stern-Gerlach Experiment (1922): Passed a beam of silver atoms (4d 10 5s 1 ) through an inhomogeneous magnetic field and observed that they split into two beams of space quantized components. Uhlenbeck and Goudsmit (1925) showed that these were two angular momentum states the electron has intrinsic angular momentum "SPIN" angular momentum Pauli Exclusion Principle (1925): no more than 2 electrons per orbital, or, no two electrons with all the same quantum numbers. Additional quantum number, now called m s , was postulated. Postulate 6: All electronic wavefunctions must be antisymmetric under the exchange of any two electrons. Theoretical Justification Dirac (1928) developed relativistic quantum theory & derived electron spin angular momentum Orbital Angular Momentum L = orbital angular momentum L = l ( l + 1 ) l =
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern