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Chapter7_1 - CHEMISTRY 1307 Chapter VII The Structure of...

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10/11/2011 1 1 CHEMISTRY 1307 Chapter VII The Structure of Atoms and Periodic Trends 2 Arrangement of Electrons in Atoms Electrons in atoms are arranged as SHELLS (n) SUBSHELLS ( l ) __________ (m l ) SPIN (m s ) 3 Arrangement of Electrons in Atoms Shell 1 (n = 1) one s orbital (l = 0) Shell 2 (n = 2) one s orbital (l = 0) and three p orbitals (l = 1, m l = -1, 0, 1) Shell 3 (n = 3) one s orbital (l = 0) three p orbitals (l = 1, m l = -1, 0, 1) and five d orbitals (l = 2, m l = -2, -1, 0, 1, 2) etc. And always, m s = ± 1/2
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