lecture notes 11

lecture notes 11 - Octet Rule In atoms F F In molecules H H...

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Octet Rule In atoms F F In molecules H H
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In More Detail He 1s 2 isoelectronic Li + , Be 2+ , H - Na + , Mg 2+ , F - , O 2- , N 3- Ne 1s 2 2s 2 2p 6 8 valence electrons
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18 Valence Electron Rule for Transition Elements s 2 p 6 d 10 Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn
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In Molecules C H H H 2 electrons for each H; He-shell 8 electrons for the carbon; Ne-shell sharing electrons from other atoms
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Valence Extension S O O O S O O O 8 electrons for S 8 electrons for O it requires a charge separation S has 2 positive charges 1 O is neutral, 2 O have 1 negative charge Alternative valence extension S O O O 12 electrons at S 8 electrons at each O
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The Periodic Table of Elements 1 H 1.008 --------Atomic number --------Atomic mass 1 18 1 A Periodic Table of the Elements 8A 1 H 1.008 2 2 A 13 3A 14 4A 15 5A 16 6A 17 7A 2 H e 4.003 3 Li 6.941 4 B e 9.012 5 B 10.81 6 C 12.01 7 N 14.01 8 O 16.00 9 F 19.00 10 Ne 20.18 11 Na 22.99 12 Mg 24.31 3 3B 4 4B 5 5B 6 6B 7 7B 8 9 8B 10 11 1B 12 2B 13 A l 26.98 14 Si 28.09 15 P 30.97 16 S 32.07 17 C l 35.45 18 Ar 39.95 19 K 39.10 20 C a 40.08 21 S c 44.96 22 Ti 47.88 23 V 50.94 24 Cr 52.00 25 M n 54.94 26 F e 55.85 27 C o 58.93 28 N i 58.69 29 C u 63.55 30 Zn 65.39 31 Ga 69.72
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lecture notes 11 - Octet Rule In atoms F F In molecules H H...

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