PCh9 Lec 4

(4/17/20, bes)

in progress...

Greetings,

Only 2.5 weeks left...8 class periods and 2 labs.

In lab yesterday we continued to use WebMO/Gaussian to carry out some computational activities. As a reminder, this "project" is/was due this morning at 10 am...unless you requested additional time. We are getting close to finishing Ch 9, the hydrogen atom...today and Monday. After that we will move into chapter 10 and 15...and do a lot more WebMO/Gaussian computational projects.

With the new option you have to drop, change to p/f, or a letter grade on the last day of classes, i am expecting that many of you, on the last day of class, will ask...what is my grade? I will do my best to answer this question, but please keep in mind that...yes...the 3rd exam will be given during finals week...and since there is no final, your three exam scores will now count a greater percent. In addition, is lab really a 4-hour lab? When i ask you to email me stuff, does this count as a homework? I will provide the details associated with grading asap. If you did not know, I hate "grades"...you should all be here to learn..not to earn...a grade. <--this is my new motto!

Sec 9.3 wavefunctions - continued

So, last lecture i asked you to write in your notes, 3 of the hydrogen atom wavefunctions:

• ψ_2,1,-1 (r, θ, Φ)
• ψ_2,1,0 (r, θ, Φ)
• ψ_2,1,+1 (r, θ, Φ)

All of the hydrogen atom wavefunctions are shown on pages 168-169 in the "highlighted" section. It is noted that these wavefunctions are referred to the hydrogen atom eigenfunctions as well as the hydrogen atom orbitals. "Wavefunction-->eigenfunctions-->orbitals" are different ways of saying the same thing. Please note that the subscripts on the eigenfunctions are n, l, and m_l --> ψ_n,l,ml (r, θ, Φ) <-- note that i cannot subscript a subscript, m_l...i need to work on my coding!

• ψ_2,1,0 (r, θ, Φ)
• ψ_2,1,+1 (r, θ, Φ)