Lect+31+08 - Lecture 31 A common language discussion of...

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Unformatted text preview: Lecture 31 A common language discussion of electron spin the fourth quantum number Many-electron orbitals have energies that depend on both n and l As the electron orbitals are occupied with increasing atomic number periodic trends develop across rows, and down columns Trends in Ionization Energy and Electron Affinity correlate with chemical properties Anomalies occur when d orbitals are nearly half filled and nearly filled for Cu, Ag, Au Electron spin In addition to the three quantum numbers n, l, and m l we discussed already, there is a fourth quantum number called m s the spin quantum number. The spin quantum number for electron has a value of +1/2 or -1/2. No two electrons in an atom can have the same four quantum numbers. The ground state of the hydrogen atom has one electron with the quantum numbers n=1, l=0, m l =0 which describe the 1s 1 configuration. The two magnetic moments detected for this ground state are cause by m s values of +1/2 and -1/2...
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This note was uploaded on 04/01/2008 for the course CHEM 230 taught by Professor Sharp during the Winter '08 term at University of Michigan.

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Lect+31+08 - Lecture 31 A common language discussion of...

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