Sigma $\sigma $ bond
(i) Overlapping is quite large and hence sigma bond is a strong bond.
Electron cloud in this case is symmetrical about the line joining the two nuclei
Electron cloud of$\pi $-bond is unsymmetrical
Sigma $\sigma $ bond
(i) Overlapping is quite large and hence sigma bond is a strong bond.
Electron cloud in this case is symmetrical about the line joining the two nuclei
Electron cloud of$\pi $-bond is unsymmetrical