## 1A. Lecture 06. Quantum Numbers.

#### Recorded on March 9, 2013.

Index of Topics:

00:16- Quantum Numbers- Introduction

00:53- Wavefunctions

01:01- Analogy: Finding Person on Campus

01:56- Quantum Numbers

03:19- Atomic Orbitals

03:48- Quantum Numbers (revisited)

03:56- Quantum Number-Principle Quantum Number

04:30- Quantum Number-Angular Momentum Quantum Number

07:01- Quantum Numbers- Magnetic Quantum Number

09:09- Filling in Quantum Numbers

10:08- Wavefunctions

10:13- Quantum Numbers- Spin Quantum Numbers

11:52- Example: State if Sets of Quantum Numbers is Permissible for an Electron

15:05- Shielding and Penetration

18:00- Energies of Orbitals

21:12- Electron Configuration

23:52- Example: Write Electron Configuration for Cobalt

26:11- Energies in Relation to Periodic Table

28:07- Diamagnetism Vs. Paramagnetism

30:15- Electron Configurations of Ions

33:14- Electron Configurations Exceptions

36:05- Examples of Configuration Examples

36:33- Electron Configurations of Ions- CO

37:25- Electron Configurations of Ions- Neutral Cr

38:41- Electron Configurations of Ions- Cr^(1+)

39:16- Electron Configurations of Ions- Cu and Cu^(1+)

40:30- Discussion Question: Why do Cr, Mo, W, Cu, Ag, and Au all form +1 Ions?

42:25- Switching Gears....Periodic Trends

42:53- What We are Going to Learn!

43:37- Development of the Periodic Table

43:41- Mendeleev Periodic Table

44:39- Development of the Periodic Table

45:24- Periodic Table Outline

46:17- Effective Nuclear Charge

48:47- Atomic Radius

51:19- Examples- Rank in Order of Increasing Radius

54:39- Ionic Radius

57:44- Example: Ranking from Smallest to Largest in Isoelectronic Series

Required attribution: Brindley, Amanda General Chemistry 1A (UCI OpenCourseWare: University of California, Irvine), ocw.uci.edu/courses/chem_1a_gene....html. [Access date]. License: Creative Commons Attribution-ShareAlike 3.0 United States License (creativecommons.org/licenses/by-...n_US)

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