1. KOREY TREMBLAY CHEMISTRY Atomic Bonding

2. Review Protons and Electrons Nucleus Orbitals Atomic Radius

3. Goals Ability to answer questions about: 1. Electronegativity 2. Lewis Dot Diagrams 3. Different types of Bonding

4. Electronegativity Atomic radius Electronegativity number

5. Examples Sodium Chloride – NaCl Magnesium Bromide – MgBr 2

6. Examples Sodium Chloride – NaCl Magnesium Bromide – MgBr 2 Notice something about these examples?

7. Ionic compounds “Stealing” of electrons Metal and Nonmetal Electronegativity difference Octet rule

8. Lewis Diagrams – Ionic compounds Electrons belong only to one atom Each atom is charged Lewis diagram of Water Salt experiment

9. Covalent bonds Both atoms “share” the electrons Forms a stronger bond Octet rule Oxygen

10. Lewis Diagrams – Covalent bond Drawing a Lewis Diagram for O 2 Partial Charges (water) Hydrogen bonds

11. Hydrogen Bonding Based on attraction of charges No electrons are shared or transferred Penny drop experiment

12. Worksheet!

13. Next week… VSEPR Like charges repel