AP Chemistry
2.6 Resonance and Formal Charge
2.2 Intramolecular Force and Potential Energy
Hydrocarbons contain carbon-carbon bonds that vary in bond order, bond length, and bond dissociation energy depending on their structure. Consider the molecules ethane (\(\text{C}_2\text{H}_6\)), benzene (\(\text{C}_6\text{H}_6\)), ethene (\(\text{C}_2\text{H}_4\)), and ethyne (\(\text{C}_2\text{H}_2\)). Which of the following correctly ranks the carbon-carbon bond lengths from longest to shortest, and provides the correct justification?
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