KOREY TREMBLAY CHEMISTRY Atomic Bonding. Review Protons and Electrons Nucleus Orbitals Atomic Radius.

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Presentation transcript:

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