Why can't the phenyl cation be stabilized by resonance?

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SUMMARY

The phenyl cation cannot be stabilized by resonance due to the nature of its structure and the distribution of charge. Despite satisfying resonance conditions, such as planar carbon atoms and equal unpaired electrons, the positive charge on the carbon atom leads to instability. The carbon atom is not sp-hybridized as initially thought, and the only potential rearrangement, a hydride shift, is energetically unfavorable. Therefore, resonance does not provide stabilization for the phenyl cation.

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In my book, it's written that the phenyl cation can't be stabilized by resonance. I can't think of any reason why this is so. All the conditions for resonance are satisfied : all carbon atoms lie in one plane, all possible canonical structures will have the same number of unpaired electrons, we'll only move the pi - electrons.
Also, I think that the carbon atom having positive charge must be sp - hybridized, as per the orbital diagram, but I guess even that is incorrect. Can anyone explain this?
 
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Try drawing out the resonance structures.
 
The only way to rearrange a phenyl cation would be a hydride shift, which is unfavorable.
 

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