Atoms are connected by bonds. These bonds can be categorised into sigma and pi bonds. The compound given as But-2-enoic acid have 11 sigma bonds and 2 pi bonds.
- The sigma bonds are formed due to head to head overlapping of orbitals. The sigma bonds are represented as single bonds. In crotonic acid, there are 11 sigma bonds, such that eleven atoms are single bonded attached to other atoms.
- The pi bonds are formed when the two orbitals of the same atom overlap with two orbitals of other atom. The pi bonds are formed when atoms have double or triple bonds. In the crotonic acid, there are two pi bonds, which means that two of the atoms have double bond.
Therefore, the crotonic acid have 11 sigma and 2 pi bonds.
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