Ch.10 - Molecular Shapes & Valence Bond TheoryWorksheetSee 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

Solution: Consider the resonance structures for the carbonate ion. How much negative charge is on each oxygen of the carbonate ion? What is the bond order of each carbon-oxygen bond in the carbonate ion?

Problem

Consider the resonance structures for the carbonate ion. 

How much negative charge is on each oxygen of the carbonate ion? 

What is the bond order of each carbon-oxygen bond in the carbonate ion?

Solution

Analyze each structure and determine the charges in each atom. The sum of the charges will be the net charge of the molecule

For the bond order, identify the bonds in the structure.

Step 1. Analyze the resonance structures

  • Since the charges of the atoms are already given, we can notice that two of O atoms have a charge of -1 where C and O are neutral.
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