the Major difference between sigma and pi bond is that the sigma bond is formed by the axial overlap of atomic orbital and the bond is stronger while the pi bond is formed by the sidewise overlap of atomic orbitals and the bond is weaker.
- It is formed by sigma molecular orbitals.
- It is formed by head to head overlapping of atomic orbitals.
- It is cylindrically symmetrical around the bond axis.
- It is a comparatively stronger bond due to the maximum overlap.
- It is formed between s-s, s-p, and p-p orbitals by the linear overlap.
- It is formed by pi molecular orbitals.
- It is formed by the side-by-side overlapping of the atomic orbitals.
- It has two regions of the electronic cloud above and below the two nuclei.
- It is a comparatively weaker bond due to lesser overlap.
- It is formed co-planar and parallel p-p orbital overlap.
Why Sigma Bond is Stronger Than Pi Bond?
According to quantum mechanics, the sigma bond is stronger than Pi bond, the reason is that the orbital paths in Pi bonds are parallel so there is always less overlap between the p-orbital. the Pi bonds create when two atomic orbitals are in contact with each other through two areas of overlap.