Free Radical Stability and Bond Cleavage

The video tutorial covers Marconico's and Anti-Marconico's rules, focusing on the behavior of pi electrons in alkenes, the stability of carbocations, and the reactivity of hydrogen halides. It explains the mechanisms of these rules, highlighting the differences between symmetrical and unsymmetrical alkenes, and the role of free radicals in the Anti-Marconico's rule.

What type of electrons are found in a double bond of an alkene?

• Gamma electrons

• Delta electrons

• Pi electrons

• Sigma electrons

Which type of alkene has different groups on either side of the double bond?

• Unsymmetrical alkene

• Symmetrical alkene

• Cyclic alkene

• Aromatic alkene

Which carbocation is the most stable?

• Tertiary carbocation

• Secondary carbocation

• Primary carbocation

• Quaternary carbocation

Which hydrogen halide is the most reactive?

• Hydrogen fluoride

• Hydrogen chloride

• Hydrogen bromide

• Hydrogen iodide

According to Markovnikov's Rule, where does the negative part of a halogen acid attach?

• To the carbon with equal hydrogen atoms

• To the carbon with fewer hydrogen atoms

• To the carbon with no hydrogen atoms

• To the carbon with more hydrogen atoms

In the mechanism of Markovnikov's Rule, which carbocation does the bromine ion prefer to attack?

• Primary carbocation

• Secondary carbocation

• Tertiary carbocation

• Quaternary carbocation

What is another name for the Anti-Markovnikov's Rule?

• Peroxide effect

• Inductive effect

• Resonance effect

• Hyperconjugation effect

In Anti-Markovnikov's Rule, where does the bromine attach in the presence of a peroxide?

• To the carbon with equal hydrogen atoms

• To the carbon with no hydrogen atoms

• To the carbon with fewer hydrogen atoms

• To the carbon with more hydrogen atoms

What type of bond cleavage occurs in the presence of benzoyl peroxide?

• Covalent cleavage

• Ionic cleavage

• Homolytic cleavage

• Heterolytic cleavage

Which free radical is more stable in the Anti-Markovnikov's mechanism?

• Secondary free radical

• Quaternary free radical

• Primary free radical

• Tertiary free radical