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Question

How are resonance structures for a molecule or polyatomic ion represented?

A
With a double-headed arrow in between structures
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B
As a progression of structures
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C
The parts of each structure that vary are circled or highlighted
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D
They are simply displayed
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Solution

The correct option is D They are simply displayed
  • They can be represented by several correct Lewis formulas, called 'contributing structures', 'resonance structures' or 'canonical forms'. The real structure is an intermediate of these structures represented by a resonance hybrid.
  • In diagrams, contributing structures are typically separated by double-headed arrows (↔).

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