e4510lecture-2 - Bonding Bonding is primarily by valence...

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J.W. Morris, Jr. University of California, Berkeley Engineering 45 Spring, 2010 Bonding • Bonding is primarily by valence electrons • Bonding is electrostatic • The “chemist’s” model – Chemical bonds are localized between atoms • The “physicist’s” model – Electrons wander through the solid – Electron states are gathered into “bands”
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J.W. Morris, Jr. University of California, Berkeley Engineering 45 Spring, 2010 Electron States in Atoms • Pauli exclusion principle • Quantum numbers – n = orbit – l = angular momentum [0(s)1(p)2(d)3(f)…n-1] – m = z-component of l [-1,…,l] – s = spin (1/2,-1/2) • Configuration – 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 ...
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J.W. Morris, Jr. University of California, Berkeley Engineering 45 Spring, 2010 Electron States in Atoms • Pauli exclusion principle • Quantum numbers – n = orbit – l = angular momentum [0(s)1(p)2(d)3(f)…n-1] – m = z-component of l [-1,…,l] – s = spin (1/2,-1/2) • Configuration – 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 ...
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University of California, Berkeley
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This note was uploaded on 02/09/2010 for the course ENGIN 45 taught by Professor Devine during the Spring '07 term at University of California, Berkeley.

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e4510lecture-2 - Bonding Bonding is primarily by valence...

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