1. I.Bonding A.What is a chemical bond? Why study chemical bonds? B.Types of Chemical Bonds 1.Elements of Largely Different IE a. Ionic Bonds (electrons transferred) 2. Elements of Similar IE b. Covalent Bonds (electrons shared) Chemical Bonding

2. Bonding in H 2 + 1e -

3. Bonding in NaCl + 10 e - 17 e - 18 e - 9 e - + -

4. ionic covalent Ionic Character and Electronegativity

5. Dipole Moments

6. Trends in Electronegativity

7. Recognizing Polar Bonds H-H Cl-Cl H-Cl H-F C-O C-F O-O

8. Recognizing Ionic vs Covalent Compounds Ionic Compounds – Form from metals and nonmetals Covalent Compounds – Form from nonmetals CO 2 N2O4N2O4 CaCl 2 NaF MgO C6H6C6H6 HCl

9. Net Dipole Moment

10. Ionic Solid