
Concept explainers
One Lewis structure for the 2-butenyl cation is

Interpretation:
The resonance structure of the given molecule is to be determined
Concept Introduction:
When the electron distribution of a molecule can be depicted correctly in more than one way using different Lewis structures, the drawings are called resonance structures.
Resonance structures have no discrete existence of their own but, taken in combination, describe the true structure of the molecule.
Answer to Problem 1EQ
The resonance structure of the given molecule is,
Explanation of Solution
Lewis structure for 2-butenyl cation:
A new resonance structure can be shown as,
The arrow mark represents the shift of pi-electrons.
The resonance structure of the given molecule is drawn.
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Chapter 2 Solutions
Pushing Electrons
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