201-03_chapter_7_handouts_part_2

201-03_chapter_7_handouts_part_2 - Paramagnetic unpaired...

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Paramagnetic unpaired electrons 2p Diamagnetic all electrons paired 2p
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Each electron in an atom will de defined by four quantum numbers ( n , l , m l , m s ). As n increases, there are more possible values for the others. What kind of values can be found and what they mean? • n = 0, l = 1, m l = 0, m s = ½ • n = 2, l = 1, m l = 0, m s = ½ • n = 4, l = 3, m l = -3, m s = -½ Could you have a 2d orbital? What is the electron configuration of Mg? What are the possible quantum numbers for the last (outermost) electron in Cl?
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Condensed Electronic Configuration Mg : 1s 2 2s 2 2p 6 3s 2 Ne : 1s 2 2s 2 2p 6 Electron configurations of elements can be represented by a noble gas core , which shows in brackets the noble gas element that most nearly precedes the element being considered , followed by the symbol for the highest filled subshells in the outermost shells. Mg : [Ne] 3s 2 Core Electrons Valence Electrons Identify the atom that has the following ground-state electron configuration: [Ar]4s 2 3d 6 [Ne]3s 2 3p 3
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This note was uploaded on 02/10/2011 for the course CHEM 201 taught by Professor Griffen during the Fall '09 term at Bunker Hill.

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201-03_chapter_7_handouts_part_2 - Paramagnetic unpaired...

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