Respuesta :

transitionstate
Answer:
             The structure of 1-Butyne is shown below and it contains;

                                         Nine Sigma Bonds

                                             Two Pi Bonds

Explanation:
                     In given structure the sigma bonds are highlighted with blue colour and pi bonds are highlighted by Black colour and indicated by red arrows.
                     Remember the very first covalent bond between two atoms is always the sigma bond. After formation of sigma bond if further p orbitals with unpaired electrons are available they will form pi bond, or two pi bonds as in given scenario.
Ver imagen transitionstate

Lewis structures are the diagrammatic representation of the molecules. It shows bonds between atoms and lone pairs of electrons. There are 9 sigma bonds, whereas 2 pi bonds are present in 1-Butyne.

Sigma bonds and pi bonds:

  • Sigma bonds are single bonds, which are formed by the head-to-head overlapping of the orbitals. In 1-butyne, there are 9 sigma bonds, present each between C-H bonds, and one between C-C bonds.
  • Pi bonds are represented by the double and triple bonds. It is formed due to the overlapping of p-orbitals perpendicular along the axis of sigma bonds. There are two pi bonds in the 1-butyne, which is present between Carbon and Carbon bonds.

Find the attached image for the lewis structure of 1-butyne.

Therefore, the 1-butyne has 9 sigma and 2 pi bonds.

To know more about lewis structure, refer to the following link:

https://brainly.com/question/11730596?referrer=searchResults

Ver imagen kasliwalalvi24

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