How do sigma and pi bonds form?

1 Answer
Mar 26, 2016

They form by the overlapping of the electronic cloud in the covalent bond.
If more electronic cloud is shared between the bonding atoms, then a strong bond is formed which is called as a sigma bond and if less electronic cloud is shared, a weaker bond is formed that is the pi bond.

In single bond, there is only presence of a sigma bond.
In case of double bond, there is a pi bond and a sigma bond.
In case of triple bond, there are two pi bonds and a sigma bond.