1. HOMEWORK Complete lab handout Read 11.7 - 11.9 Remember to try self checks! #'s 30,32-36 Review this powerpoint

2. Today's Lesson.... Electron Hotels! Do Now: How many electrons are in the following atoms? 1) H 2) Be 3) N 4) Ar 5) V 1 e - 4 e - 7 e - 18 e - 23 e -

3. So what does an electron hotel look like? There are four types of suites: Simple (s) Posh (p) Deluxe (d) FANTABULOUS (f) --- 1 room ---3 rooms ---5 rooms --- 7 rooms

4. Obviously, e - don’t really stay in hotel rooms… CORRECT VOCABULARY Floor = Principal Energy Level Suite = Sublevel Room = Orbital 3s 2p 2s 1s 1s 2 2s 1 Li

5. Hotel Layout... 3d 4s 3p 3s 2p 2s 1s NOTICE!

6. The electrons' habits.... e - are always moving so they stay in hotels. When e - enter the hotel they're lazy! (they avoid climbing the stairs at all costs)‏ e - like privacy and prefer to stay in a room all alone, but... if they have no choice, an e - will share a room with 1 other e - - maximum! When sharing a room, an e - will always ignore the other e -.

7. Example #1... Hydrogen 3d 4s 3p 3s 2p 2s 1s H has 1 e - That electron is lazy and stays in the first open room it finds! 1s 1

8. Example #2... Beryllium 3d 4s 3p 3s 2p 2s 1s Be has 4 e - Those e - are also lazy and stay in the first open rooms they find too! 1s 2 2s 2

9. Example #3... Nitrogen 3d 4s 3p 3s 2p 2s 1s N has 7 e - Those e - are also lazy and stay in the first open rooms they find too! 1s 2 2s 2 2p 3

10. Maximum Number of Electrons In Each Sublevel Maximum Number of Electrons In Each Suite Type Suite # of Maximum # Type rooms of electrons s 1 2 p 3 6 d 5 10 f 7 14

11. So how am I supposed to remember the order of the rooms? Ex: 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 5s 2 4d 9 What element would this be?47 total e - MUST BE Ag!