Periodic trends in bonding
Oxygen and Sulfur as specific examples.
1. Read Ch. 21 (963-968; 1001-1004)
2. Review the connection between periodic trends in physical properties (IE, electronegativity, ionic radius, atomic radius) and chemical properties.
Here’s the Book HW (not collected!) for chapter5,6,7:
Chapter 5: Study Questions 71, 73, 101
Chapter 6: Study Questions 60, 64, 67, 68e
Chapter 7: Study Questions 59, 63, 65, 68, 72
Answers soon!
Exam 2 is in-class on Friday, Nov. 6
See Exams page for practice test, and other information
How to get prepare? How to get help?
1) Connect with a study group.
2) I will offer extra OH next week only: Tuesday 3 – 4 pm, CRC; Thur 1 – 3pm CRC.
3) Chemistry Resource Center (third floor, ISB): TA and/or faculty available every day between noon and 10pm.
4) Learning Resource Center: tutors almost every day!
5) Supplemental Instruction: TBA
Class starts 5 minutes late! Please enter from the rear doors, and be ready for lecture at 1:30.
Atomic properties and Introduction to bonding
1. Read chapter 7 (319-330)
2. Ionization Energies
3. OWLs due Thursday and Sunday
Oct 28
EXAM 2: Friday, Nov 6 in class. Bring pencils and a calculator. The exam will cover all material not on the first exam, up through Nov 4.
Electron configurations of ions, Magnetic properties
1. Read chapter 7 (313-318)
2. OWLs due Thursday
Oct 26
It worked!
Z* (Z effective) is an important predictor for periodic trends as you move from left to right across a period. Think about the different reactitivities of Na and Cl – one has a small Z*, and wants to give away an electron; the other has a large Z*, and wants to gain another electron.