L13S07_PeriodicTrends 02-14-07

L13S07_PeriodicTrends 02-14-07 - CHEM 1A L13:...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: CHEM 1A L13: "Periodic Trends" Electron Spin, Magnetism Spin Little Magnet N Quantized Spin Q.M. Classical Q.M. ms=-1/2 "Spin Down" ms=1/2 "Spin Up" S Electron 4 Q.N.s 2001 A.Pines,M.Kubinec, UC n, ? , m? , ms L8-12 2006Kubinec, Pines, Nitsche, UCB L13-1 Ionization Energy, Electron Affinity Ionization Energy (kJ) X X + e- X+ + e- IE Summary e(kJ) (kJ) 2500 2000 1500 1000 500 0 1s2 2p6 2p4 2p5 2p2 2p3 2p1 X- EA (kJ) (kJ) IE M Na K Rb 496 -53 419 -48 403 -47 IE X Cl Br I 1s 2s 2s2 1251 1140 1008 -349 -325 -295 L12-3 3s C N O F Ne Na L12-8 EA EA H He Li Be B A.Pines,M.Kubinec,UCB A.Pines,M.Kubinec,UCB Atom Config IE EA(kJ) Atom EA(kJ) 1s1 1s2 1s22s1 1s22s2 1312 -73 Config IE EA(kJ) EA(kJ) 1086 1402 1314 1681 -122 ~0 -141 -328 Electronegativity Zeff n H He Li Be B C N O F Ne 1s22s22p2 1s22s22p3 1s22s22p4 1s22s22p5 1s22s22p6 2372 > 0 520 899 -60 >0 -27 - > 2.0 Ionic Na+Cl- - Electronegativity Partly Ionic ~ 0.4-2.0 H+Cl0.4Covalent Cl - Cl < 0.4 1s22s22p1 801 + Na ~0.9 H ~ 2.2 Cl ~ 3.2 A.Pines,M.Kubinec,UCB 2081 ~ 0 496 -53 2006Kubinec, Pines, Nitsche, Ne]3s1 UCB Na [Ne]3s A.Pines,M.Kubinec,UCB L12-6 L12-10 L13-2 2006Kubinec, Pines, Nitsche, UCB Dimitri Ivanovich Mendeleev Professor of Chemistry St. Petersburg University Founder of the Modern Periodic Table (1869) L13-3 2006 Kubinec, Pines, Nitsche, UCB 1 CHEM 1A L13: "Periodic Trends" Orbital Filling for Elements in the Periodic Table 2006Kubinec, Pines, Nitsche, UCB L13-4 Names for Groups in the Periodic Table 2006Kubinec, Pines, Nitsche, UCB L13-5 Names for Groups in the Periodic Table (cont'd) (cont' 2006Kubinec, Pines, Nitsche, UCB L13-6 2006 Kubinec, Pines, Nitsche, UCB 2 CHEM 1A L13: "Periodic Trends" 2006Kubinec, Pines, Nitsche, UCB L13-7 Periodic Table Recommended by International Union of Pure and Applied Chemistry (IUPAC) 2006Kubinec, Pines, Nitsche, UCB L13-8 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 L13-9 2006 Kubinec, Pines, Nitsche, UCB 3 CHEM 1A L13: "Periodic Trends" 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 L13-10 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 L13-11 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 L13-12 1s1 2s1 2s2 3s1 2006Kubinec, Pines, Nitsche, UCB 2006 Kubinec, Pines, Nitsche, UCB 4 CHEM 1A L13: "Periodic Trends" First Ionization Energy for the Elements in the First Five Periods 2006Kubinec, Pines, Nitsche, UCB L13-13 ChemQuiz 13.1 What is the ionization energy of Cl- (kJ/mol) ? + eCl3) 349 L13-14 - Cl 1) 1251 2006Kubinec, Pines, Nitsche, UCB 2) -349 ChemQuiz 13.2 Which of the following has the Lowest IE? IE? e- 1) Cl 2006Kubinec, Pines, Nitsche, UCB - 2) Ar 3) K+ L13-16 + 2006 Kubinec, Pines, Nitsche, UCB 5 CHEM 1A L13: "Periodic Trends" 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 L13-18 The Radius of an Atom (r) (r half the distance between the nuclei in a molecule consisting of identical atoms 2006Kubinec, Pines, Nitsche, UCB L13-19 Atomic Radii (picometers, pm) picometers, for Selected Atoms 2006Kubinec, Pines, Nitsche, UCB L13-20 2006 Kubinec, Pines, Nitsche, UCB 6 CHEM 1A L13: "Periodic Trends" ChemQuiz 13.3 Which of the following has the Smallest radius? radius? 1) Cl 2006Kubinec, Pines, Nitsche, UCB 2) Ar 3) K L13-21 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 L13-23 ChemQuiz 13.4 For which X does H2 + X2 2HX H X X H H X X H release the most energy? 1) Cl 2006Kubinec, Pines, Nitsche, UCB 2) Br 3) I L13-24 2006 Kubinec, Pines, Nitsche, UCB 7 CHEM 1A L13: "Periodic Trends" Lecture Complete 2006Kubinec, Pines, Nitsche, UCB L13-26 2006 Kubinec, Pines, Nitsche, UCB 8 ...
View Full Document

This note was uploaded on 08/19/2009 for the course CHEM 1A taught by Professor Nitsche during the Spring '08 term at University of California, Berkeley.

Ask a homework question - tutors are online