October 25

Hi Class
We began class by reviewing last night homework
Today in class we learned:

What elements constitute: s block, p block, d block and f block

Aufbau Principle:
Pauli Exclusion Principle:
Hunds Rule:

I also taught you all how to write electron configurations and orbital diagrams for elements in periods 1-3.

PowerPoint: http://www.scribd.com/doc/439038/Quantum-Chemistry-REAL-Part-1-for-October-25-and-29

Homework:
Write the Orbital Diagrams and Electron Configurations for elements 1-18.

October 23

Hi Class,

We are using the same PowerPoint from last class (see October 19). We learned about the first 4 quantum numbers, and how to determine what they are:



1st Quantum Number: Principle Quantum number (n)- Energy Level, Whole number integer ranging from 1 to infinity



2nd Quantum number (L) ranges from zero to (n-1): Each numerical value corresponds to a letter, a shape and a maximum number of electrons



0 = s : 2 electrons maximum- This subshell is spherical

1 = p: 6 electrons maximum- This subshell is dumbbell shaped

2 = d: 10 electrons maximum- This subshell has 4 cloverleaf shaped orientations, and one that resembles a dumbbell with a doughnut.

3= f: 14 electrons maximum - This subshell has a shape that is not easy to depict in pictures.



3rd Quantum number (m l) -ranges from -l to +l



4th Quantum number (m s) - is either -1/2 or +1/2



Homework:

1. Give the values of n, ℓ, mℓ and ms for every orbital with n = 6.
2. Indicate whether the set of quantum numbers (n, ℓ, mℓ) exits or not.
a. 1, 1, 0
b. 5, 4, –3
c. 3, 2, –3
d. 6, 7, +7
e. 8, 1, 0
f. –2, 1, +1
g. 4, 2, –1
h. 7, 3, +4

3. Draw the shapes (including the orientation) of all the s, p and d orbitals.

4. Which orbital in each of the following pairs is higher in energy?
a. 5s or 5d
b. 4s or 3p
c. 6s or 4d

5. What is the maximum number of electrons in an atom that can have these quantum numbers?
a) n = 2
b) n = 3,
c) n = 3, l = 1
d) n = 4, l = 2
e) n = 5, l= 3, ml=3

October 19

Hi Class
Here is today's Power Point and Lecture Notes. Please print out notes, as we will use them throughout this unit.

PowerPoint:http://www.scribd.com/doc/407986/Quantum-Chemistry-REAL-Part-1A-for-october-19

Notes: http://www.scribd.com/doc/403933/Quantum-Notes

Homework: Enjoy the weekend. Print out your notes and review for next class. We will continue on from Heisenburg's Uncertainty Principle.

October 11

Hi Class,
Today we worked with the two equations that allow you to calculate:
wavelength and frequency of a wave
Speed of light = Wavelength X Frequency
Energy of a wave
Energy = Planck's constant X frequency

Your homework is to pull up the following worksheet, and do page #2

http://butane.chem.uiuc.edu/cyerkes/Chem102AEFa07/worksheets/Worksheet%2010.pdf

Print out the entire file, we will be using it next week.

Also here is a nice electromagnetic spectrum diagram:

http://img.search.com/8/84/Electromagnetic_spectrum.JPG

You have a quiz tomorrow on this stuff. I will include all you need for test, including diagrams and constants. Good Luck.


P.S. Here are the answers. Please KNOW how to do the problems.

http://docs.google.com/Present?docid=df5pkggb_347f8jk85&fs=true

October 9

Today we started the unit on quantum chemistry. You were all provided my handwritten notes. We will continue the topic on Wed.

Homework:
Answer the questions from the PowerPoint