## Lec 18. The Hydride Ion (Continued): Two-Electron Systems

#### Lec 18. Quantum Principles -- The Hydride Ion (Continued): Two-Electron Systems --

Instructor: A.J. Shaka, Ph.D

Recorded on February 21, 2014.

Index of Topics:

0:53 Where We Left Off

2:06 Figuring r12

3:55 Law of Cosines

7:58 First-Order Correction

9:11 The theta Integral

12:56 The Rest of the Integrals

14:43 The Integral Over r2

17:42 What's the Energy?

19:56 Stability of Hydride

24:37 Improving Our Estimate

30:19 Evaluating the Energy

37:09 The Repulsion Term

40:34 Practice Problem 24

43:59 The Helium Atom

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