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MHT CET202617 April 2026Evening ShiftChemistryChemical Bonding and Molecular StructureActual

Which of the following statements regarding Pi ( ) bond is NOT true ?

Options

  1. AIt is weaker than sigma bond.
  2. BIt is formed by lateral overlapping of two half filled P orbitals.
  3. CIt is formed after the formation of sigma bond.
  4. DThe presence of Pi ( ) bond increases the bond length of covalent bond.

Correct answer

D. The presence of Pi ( ) bond increases the bond length of covalent bond.

Step-by-step solution

A pi ( ) bond is formed by the lateral or sideways overlapping of half-filled atomic orbitals (like p or d orbitals) after the formation of a sigma ( ) bond. Because the extent of overlapping in a bond is less than that in a bond, a bond is weaker than a bond. The presence of a bond between two atoms increases the bond order (e.g., from single to double or triple bond). An increase in bond order leads to a stronger attractive force between the atoms, which decreases the bond length. For example, the C-C single bond

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