Pi-n Conjugation: Unlocking the Secrets of Molecular Stability

The video tutorial explains different types of conjugation: π N, π negative, π P, and π positive. It discusses how these conjugations affect the stability and reactivity of molecules like vinyl chloride, chlorobenzene, allyl carbon ion, propanyl free radical, and benzyl carbocation. The tutorial highlights the role of resonance in forming stable structures and compares the reactivity of chlorine in various compounds.

What is the effect of π N conjugation on the carbon-chlorine bond in vinyl chloride?

• It forms no bond.

• It forms a double bond character.

• It forms a single bond.

• It forms a triple bond.

Why is chlorine in chlorobenzene less reactive compared to chlorocyclohexene?

• Due to the absence of π bonds.

• Because of the strong carbon-chlorine double bond.

• Because it forms a triple bond.

• Due to the presence of a weak single bond.

Which type of conjugation is observed in allyl carbon ion?

• π N conjugation

• π P conjugation

• π negative conjugation

• π positive conjugation

What is the role of unpaired P electrons in π P conjugation?

• They do not participate in bonding.

• They create a triple bond.

• They participate in resonance.

• They form a double bond.

In which molecule is π positive conjugation observed?

• Allyl carbon ion

• Vinyl chloride

• Benzyl carbocation

• Propanyl free radical