difference between Sigma and Pi bond
Answers
Sigma and pi bonds are used to describe some features of covalent bonds and molecules with three or two atoms. These bonds are formed by overlapping of incomplete s and p orbitals of two atoms that participate for bonding. Hence, this model is often referred to as overlap model. The model is mainly applied to explain the bond formation of smaller atoms and is not applicable to explain the bonding of larger molecules. The main difference between sigma bond and pi bond is their formation; axial overlapping of two orbitals forms sigma bond while lateral overlapping of two orbitals forms pi bond.
Answer:
sigma bond:
➡️A sigma bond is formed by the axial overlap of orbitals.
➡️extent of overlapping is more hence the bond is stronger.
➡️A sigma bond involves overlap pf s-s ,s-p, p-p orbitals.
➡️free rotation pf atoms is possible across a sigma bond.
pi bond:
➡️A pi bond is formed by the side ways overlap of orbitals.
➡️ extent of overlaping is less hence the bond is weak.
➡️A pi bond involves the overlap of p orbitals only.
➡️ there is no free rotation of atoms across a pi bond.
Hope it helps ✔︎✔️.