MCQ
$Pi$ bond is formed:
  • A
    By the overlapping of atomic orbitals on the axis of nuclei.
  • B
    By mutual sharing of $p -$ electrons.
  • By sideways overlapping of half filled $p -$ orbitals.
  • D
    By overlapping of $s-$orbitals with $p -$ orbital.

Answer

Correct option: C.
By sideways overlapping of half filled $p -$ orbitals.
If a bond between two atoms is broken when one atom is rotated around the bond axis, that bond is called a $pi$ bond.
$Pi$ bonds are formed by the sideways overlap of parallel half filled $p−$orbitals on adjacent atoms as shown in the figure.
They are not formed from hybrid orbitals.

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