Question

Which orbitals can overlap to form a pi bond?

Answer 1

The correct option is A)

They overlap to form a pi bond

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Answer 2

Ans: A) two p-orbitals

The connectivity between two atoms in a given molecule can be via single bonds or multiple bonds.

-Single bonds are categorised as sigma bonds

-Multiple bonds can be:

1) Double bond = 1 sigma + 1 pi bonds

2) Triple bonds = 1 sigma + 2 pi bonds

Sigma bonds are usually formed by the overlap of 2 s-orbitals or some hybrid orbitals that is a combination s,p (or even d-) orbitals

Pi orbitals however are formed by the sideways of overlap of unhybridized p-orbitals.

For example:

Ethylene : H2C=CH2 has a double bond which is a combination of a sigma bond and a pi bond