How Many Sigma and Pi Bonds Are in Ethyne?

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SUMMARY

The discussion confirms that in the ethyne molecule (C2H2), there are a total of 3 sigma (σ) bonds and 2 pi (π) bonds. The triple bond between the carbon atoms consists of 1 sigma bond and 2 pi bonds, while each carbon atom forms an additional sigma bond with a hydrogen atom. It is crucial for students to remember that the triple bond contributes one sigma bond, which is often overlooked in multiple-choice questions.

PREREQUISITES
  • Understanding of molecular hybridization
  • Knowledge of sigma (σ) and pi (π) bonds
  • Familiarity with the structure of ethyne (C2H2)
  • Basic principles of chemical bonding
NEXT STEPS
  • Study molecular hybridization in detail
  • Learn about the differences between sigma and pi bonds
  • Explore the bonding structure of other hydrocarbons
  • Review common pitfalls in multiple-choice chemistry questions
USEFUL FOR

Chemistry students, educators, and anyone studying molecular bonding and hybridization concepts.

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Homework Statement


In the hybradization of ethyne molecule, how many σ and ∏ bonds are being formed?


The Attempt at a Solution


Since, there is a triple bond between the carbon atoms, it should form 2 ∏ bonds and 1 σ bond.
Relatively there will be 2 other σ bonds between Carbon-Hydrogen.

So, all together, there are supposed to be 3 σ and 2 ∏ bonds.
Want to know if the above theory is right?
 
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That's correct.
 
Yes. Perfect. The only problem that happens in multiple choice questions is that students might forget to mention that the triple bond also contributes a sigma bond.
 

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