Practice question · Multiple choice
Resonance structures are an artifact of chemical notation rather than physical transitions. What does this distinction imply when evaluating the electronic structure of the ozone molecule?
Hints
- Does a resonance contributor ever exist as an independent, observable physical state?
- How do spectroscopic bond measurements reflect the difference between a mixture and a hybrid?
Show the answer
D. The molecule exists permanently as an intermediate hybrid state
Why
Treating resonance as a dynamic shift misinterprets Lewis drawings as distinct physical states. In reality, delocalised electron density is static across the framework, meaning fractional bond orders are genuine, invariant physical properties rather than time-averaged transitions.
Practise Lewis Structures, Formal Charge and Resonance
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More questions on Lewis Structures, Formal Charge and Resonance
- How many valence electrons must a Lewis structure of the carbonate ion, mathrmCO3²⁻, account for in total?
- Complete the account of what the ozone bond lengths tell us.
- Which species genuinely break the octet rule, rather than merely looking unusual?
- Put the steps of drawing a Lewis structure into their correct order.
- Match each molecule to the way it departs from a simple octet structure.
- Sort each central atom by whether it can hold more than eight valence electrons.