Chapter 8 part 3

Chapter 8 part 3 - Review from last day. Orbitals are...

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1 • Orbitals are characterized by a set of three quantum numbers: n = principle quantum number. All orbitals with the save principle quantum number are in the same shell . Allowed values: the set of positive integers. l = secondary quantum number which divides the orbitals in a shell into smaller groups called subshells . Allowed values: from 0 to ( n –1) . m l = magnetic quantum number which divides the subshells into individual orbitals. Allowed values: integers from – l to + l . Review from last day………. • A fourth quantum number is also required to characterize an electron in an orbital - the spin quantum number, m s. 1 last quantum number. . spin quantum number
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2 Electron Configurations Electron configuration describes the distribution of electrons among the various orbitals in the atom • Electron configuration is represented in two ways The spdf notation uses numbers to designate a principal shell and the letters to identify a subshell; a superscript number indicates the number of electrons in a designated subshell An orbital diagram uses boxes to represent orbitals within subshells and arrows to represent electrons; each box has two electrons. The arrows represent electron spins; opposing spins are paired together Rules For Electron Configurations
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This note was uploaded on 01/12/2012 for the course CHEM 103 taught by Professor Jeffashley during the Fall '10 term at Philadelphia.

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Chapter 8 part 3 - Review from last day. Orbitals are...

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