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Ch.9 - Bonding & Molecular StructureWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch.17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds
Lewis Dot Symbols
Chemical Bonds
Dipole Moment
Octet Rule
Formal Charge
Lewis Dot Structures: Neutral Compounds
Lewis Dot Structures: Sigma & Pi Bonds
Lewis Dot Structures: Ions
Lewis Dot Structures: Exceptions
Lewis Dot Structures: Acids
Resonance Structures
Average Bond Order
Bond Energy
Coulomb's Law
Lattice Energy
Born Haber Cycle

Resonance Structures are used to represent the different possible bonding arrangements of a molecule.

Examining Resonance Structures

Concept #1: Resonance Structures

Resonance Hybrid is made up of all the major resonance structures. 

Example #1: Determine the remaining resonance structures possible for the carbonate ion, CO32–

Practice: Draw all possible resonance structures for the chlorate ion, ClO3?

Example #2: Determine the average charge of the oxygen atoms within the phosphate ion.

Average Charge is the charge of an element from overall charges of ALL its resonance structures. 

Practice: Determine the average charge of the oxygen atoms within the chlorite ion, ClO2.

Practice: Determine which of the following drawings would be the best structure for the N2O molecule.


a) a 

b) b

c) c

d) All are equally stable

Practice: Which of the following phosphate, PO43- Lewis structures is the best, most valid resonance structure?

Practice: Draw all the resonance structures for the following ionic compound: RbIO2