Hybridization problem about guanidine.

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SUMMARY

The discussion centers on the hybridization of guanidine, specifically the hybridization states of its central carbon and nitrogen atoms. The central carbon atom exhibits sp2 hybridization with one unhybridized p orbital. The nitrogen atom that is doubly bonded to carbon is identified as sp hybridized, while the other two nitrogen atoms are classified as sp2 hybridized. The conversation emphasizes the complexity of defining hybridization states and the importance of considering lone pairs in the analysis.

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  • Understanding of hybridization concepts in organic chemistry
  • Familiarity with molecular geometry and electron pair repulsion theory
  • Knowledge of guanidine's molecular structure and bonding
  • Basic grasp of atomic orbital theory
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Structure of guanidine is as follows:
800px-Guanidine-2D-skeletal.png

The central carbon atom is obviously of sp2 hybridization and there is 1 unhybridized p orbital remaining. I suppose that the N atom doubly-bonded to C is of sp hybridization and the other 2 N atoms are of sp2 hybridization. Am I right?
 
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First I want to express my general objections against saying that an atom "is" sp however hybridized.
Having said this, I would like to remind you of the free electron pair on the N with only one H attached to it.
 

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