1. Tuesday 10/19/10 Lewis Structures and Metallic Bonding

2. Agenda • Return Naming Compounds Quiz • Collect Symbol Me Projects • Lewis structures • Metallic Bonding • Hydrogen Bonding • Jeopardy Review

3. Lewis structures • Atoms form bonds to gain a full shell of valence electrons. (Octet Rule) • If electrons are not involved in bonding, then they are lone pairs. • Each bond is made up of 2 electrons.

4. Steps • Count up the total # of valence electrons.  If it’s an ion, then add or subtract e- as needed. • Connect all the atoms with single bonds. • Place the remaining electrons as lone pairs around the atom. • Create double or triple bonds if there are not enough electrons to go around. • ALWAYS FOLLOW THE OCTET RULE!!!!

5. #1 • Draw the Lewis structure for NO3-

6. #2 • Draw the Lewis structure for CCl3+

7. #3 • Draw the Lewis structure for CO2

8. #4 • Draw the Lewis structure for N2O4

9. #5 • Draw the Lewis structure for C2N24-

10. #6 • Draw the Lewis structures for PO43-

11. #7 • Draw the Lewis structure for OCN-

12. Video-Ionic, Covalent, and Metallic Bonds

13. Youtube videos HW

14. Hydrogen Bonding Video

15. http://www.youtube.com/watch?v=lkl5cbfqFRM&feature=related\ • http://www.youtube.com/watch?v=LGwyBeuVjhU