Saturday, April 23, 2011

Bohr Model / Quantum Mechanics Test

Unfortunately, I will not have time to make up some practice questions for Monday's test over the material in Chapter 10. I have a plumbing emergency at my house and I do not have the time to spend on it. I will map out some things that you should know.
  • Know about the "Light / Quantum Mechanics" packet. Know how to use all equations in the packet. All equations and constants will be supplied.
  • Know the order of filling orbitals by using a periodic table. I will be supplying you with a periodic table for the test.
  • Know the concept of penetration by an electron to lower principle energy levels and how this concept dictates the order on how the sub-levels and orbitals of different energy levels are filled.
  • Know the shape of an "s" orbital (sphere) and a "p" orbital (dumb bell)
  • Know the sub-levels that are in each principle energy level. 1st - s only; 2nd - s and p; 3rd - s, p, and d; 4th (and on) s, p, d, and f.
  • Know how many orbitals are in each sub-level. You should be able to calculate how many electrons could be held in a particular principle energy. For example: How many electrons could be in the 4th principle energy level? The 4th principle energy level is the first time all of the sub-levels are present. Therefore; 1 orbital for the s, 3 orbitals for the p, 5 orbitals for the d, and 7 orbitals for the f will be a total of 16 orbitals. Each orbital can hold 2 electrons for a total of 32 electrons in the 4th principle energy level.
  • Know how to write orbital diagrams, complete electron configurations, and noble gas electron configurations.
  • Know the abnormalities for the electron configurations of chromium and copper.
  • Know the difference between a ground state electron configuration and an excited state electron configuration.
  • Know para-magnetism and di-magnetism based upon unpaired and paired electrons in an orbital.
The test is written and multiple choice. There are five written questions and 26 multiple choice questions.

Friday, April 15, 2011

Light / Bohr Model Packet Key

Below are the images for the key to the worsheet completed in class this past week. Remember, on Monday, April 18th, 2011, there will be a quiz over the material presented in class this week.





Thursday, April 14, 2011

Electromagnetic Chart

Below is an image of the electromagnetic sprectrum. You can copy the picture and enlarge it to make it easier to read.