L11S09_PeriodicTrends 02-13-09

L11S09_PeriodicTrends 02-13-09 - CHEM 1A L11:...

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Unformatted text preview: CHEM 1A L11: "Periodic Trends" Edited by Foxit Reader Copyright(C) by Foxit Software Company,2005-2008 For Evaluation Only. 2006Kubinec, Pines, Nitsche, UCB L11-1 Atom 1s 2s Electronic Configurations 2p 3s Config. Magnetism Config. C N O F Ne 2006Kubinec, Pines, Nitsche, UCB 1s22s22p2 ++ 1s22s22p3 +++ 1s22s22p4 1s22s22p5 1s22s22p6 [Ne]3s1 ++ + 0 + L11-2 Na Ionization Energy (kJ) Summary 2500 2000 1500 1000 500 0 1s2 2p6 2p4 2p5 2p2 2p3 2p1 1s 2s 2s2 3s C N O F Ne Na L12-8 H He Li Be B A.Pines,M.Kubinec,UCB Electronegativity Zeff n - > 2.0 Ionic Na+Cl- - Electronegativity Partly Ionic ~ 0.4-2.0 H+Cl0.4Covalent Cl - Cl < 0.4 + 2006Kubinec, Pines, Nitsche, UCB Na ~0.9 H ~ 2.2 Cl ~ 3.2 A.Pines,M.Kubinec,UCB L12-10 L11-3 2006 Kubinec, Pines, Nitsche, UCB 1 CHEM 1A L11: "Periodic Trends" Edited by Foxit Reader Copyright(C) by Foxit Software Company,2005-2008 For Evaluation Only. 2006Kubinec, Pines, Nitsche, UCB Dimitri Ivanovich Mendeleev Professor of Chemistry St. Petersburg University Founder of the Modern Periodic Table (1869) L11-4 Orbital Filling for Elements in the Periodic Table 2006Kubinec, Pines, Nitsche, UCB L11-5 Names for Groups in the Periodic Table 2006Kubinec, Pines, Nitsche, UCB L11-6 2006 Kubinec, Pines, Nitsche, UCB 2 CHEM 1A L11: "Periodic Trends" Names for Groups in the Periodic Table (cont'd) (cont' 2006Kubinec, Pines, Nitsche, UCB L11-7 2006Kubinec, Pines, Nitsche, UCB L11-8 Periodic Table Recommended by International Union of Pure and Applied Chemistry (IUPAC) 2006Kubinec, Pines, Nitsche, UCB L11-9 2006 Kubinec, Pines, Nitsche, UCB 3 CHEM 1A L11: "Periodic Trends" Ionization Energy, Electron Affinity X X + eM IE (kJ mol-1) EA (kJ mol-1) Na 496 -53 X+ + e- IE X EA K 419 -48 + e- Rb 403 -47 X IE (kJ mol-1) EA (kJ mol-1) Cl 1251 -349 Br 1140 -325 I 1008 -295 2006Kubinec, Pines, Nitsche, UCB L11-10 Alkali Metals in Water 2 M(s) + 2 H2O (s) Redox Reaction 2 M 2 M+ + 2 e+ - H2 + 2 MOH 2 H20 + 2 e- H2 + 2 OH- - 2006Kubinec, Pines, Nitsche, UCB L11-11 Successive ionization Al (g) Al+ (g) Al2+ (g) Al3+ (g) Al+ (g) + eAl2+ (g) + eeAl3+ (g) + eeAl4+ (g) + eeI1 = 580 kJ/mol I2 = 1815 kJ/mol I3 = 2740 kJ/mol I4 = 11,600 kJ/mol 2006Kubinec, Pines, Nitsche, UCB L11-12 2006 Kubinec, Pines, Nitsche, UCB 4 CHEM 1A L11: "Periodic Trends" Edited by Foxit Reader Copyright(C) by Foxit Software Company,2005-2008 For Evaluation Only. Trend in Ionization Energy 2500 Ionization Energy (kJ) 1s2 2p6 2p4 2p5 2p2 2p3 2p1 1 2000 1500 1000 500 0 H He Li Be B C N O F Ne Na L11-13 1s1 2s1 2s2 3s1 2006Kubinec, Pines, Nitsche, UCB First Ionization Energy for the Elements in the First Five Periods 2006Kubinec, Pines, Nitsche, UCB L11-14 ChemQuiz 11.1 What is the ionization energy of Cl- (kJ/mol) ? + eClB) -349 - Cl C) 349 L11-15 A) 1251 2006Kubinec, Pines, Nitsche, UCB 2006 Kubinec, Pines, Nitsche, UCB 5 CHEM 1A L11: "Periodic Trends" Edited by Foxit Reader Copyright(C) by Foxit Software Company,2005-2008 For Evaluation Only. ChemQuiz 11.2 Which of the following has the Lowest IE? IE? e- A) Cl 2006Kubinec, Pines, Nitsche, UCB - B) Ar C) K+ L11-17 + Atom Config Atomic Properties IE EA Atom Config 1312 -73 IE EA (kJ mol-1) 1086 -122 H He Li Be B 1s1 1s2 1s22s1 1s22s2 1s22s22p1 C N O F 1s22s22p2 2372 > 0 1s22s22p3 1402 ~ 0 520 -60 1s22s22p4 1314 -141 899 > 0 1s22s22p5 1681 -328 801 -27 Ne 1s 2s 2p 2 2 6 2081 ~ 0 2006Kubinec, Pines, Nitsche, UCB Na [Ne]3s1 496 -53 L11-19 The Radius of an Atom (r) (r half the distance between the nuclei in a molecule consisting of identical atoms 2006Kubinec, Pines, Nitsche, UCB L11-20 2006 Kubinec, Pines, Nitsche, UCB 6 CHEM 1A L11: "Periodic Trends" Edited by Foxit Reader Copyright(C) by Foxit Software Company,2005-2008 For Evaluation Only. Atomic Radii (picometers, pm) picometers, for Selected Atoms 2006Kubinec, Pines, Nitsche, UCB L11-21 ChemQuiz 11.3 Which of the following has the Smallest radius? radius? A) Cl 2006Kubinec, Pines, Nitsche, UCB B) Ar C) K L11-22 Electronegativity Zeff n - > 2.0 Ionic Na+Cl- - Electronegativity Partly Ionic ~ 0.4-2.0 H+Cl0.4Covalent Cl - Cl < 0.4 + Na ~0.9 H ~ 2.2 Cl ~ 3.2 2006Kubinec, Pines, Nitsche, UCB L11-24 2006 Kubinec, Pines, Nitsche, UCB 7 CHEM 1A L11: "Periodic Trends" ChemQuiz 11.4 For which X does H2 + X2 2HX H X X H H X X H release the most energy? A) Cl 2006Kubinec, Pines, Nitsche, UCB B) Br C) I L11-25 Lecture Complete 2006Kubinec, Pines, Nitsche, UCB L11-27 2006 Kubinec, Pines, Nitsche, UCB 8 ...
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This note was uploaded on 07/01/2009 for the course CHEM 232323 taught by Professor Nitsche during the Spring '09 term at University of California, Berkeley.

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