KOREY TREMBLAY CHEMISTRY Atomic Bonding
Review Protons and Electrons Nucleus Orbitals Atomic Radius
Goals Ability to answer questions about: 1. Electronegativity 2. Lewis Dot Diagrams 3. Different types of Bonding
Electronegativity Atomic radius Electronegativity number
Examples Sodium Chloride – NaCl Magnesium Bromide – MgBr 2
Examples Sodium Chloride – NaCl Magnesium Bromide – MgBr 2 Notice something about these examples?
Ionic compounds “Stealing” of electrons Metal and Nonmetal Electronegativity difference Octet rule
Lewis Diagrams – Ionic compounds Electrons belong only to one atom Each atom is charged Lewis diagram of Water Salt experiment
Covalent bonds Both atoms “share” the electrons Forms a stronger bond Octet rule Oxygen
Lewis Diagrams – Covalent bond Drawing a Lewis Diagram for O 2 Partial Charges (water) Hydrogen bonds
Hydrogen Bonding Based on attraction of charges No electrons are shared or transferred Penny drop experiment
Worksheet!
Next week… VSEPR Like charges repel