Question

Can a sigma bond be formed in the absence of pi bond?

Answer 1

Answer:

When hybridized orbitals form sigma bond, only then pie bonds are formed. ... According to molecular orbital theory, double bond in C2 consists of 4 electrons in two pi orbitals i.e. C2 only has pi bonds no sigma bonding takes place here. In most other cases a double bond is made up of a sigma bond and a pi bond..

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