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Questions and Answers
What is the hyperconjugation effect according to Baker and Nathan?
What is the hyperconjugation effect according to Baker and Nathan?
- The resonance effect between multiple bonds and single bonds
- The steric hindrance in electrophilic aromatic substitution
- The inductive effect in alkyl groups
- The interaction between π electrons and adjacent σ bonds (correct)
What is the basis of the stability of alkyl carbocations?
What is the basis of the stability of alkyl carbocations?
- Electronegativity of the alpha carbon atom
- Number of resonating structures and steric hindrance
- Number of alpha hydrogens and inductive effect
- Number of resonating structures and number of alpha hydrogens (correct)
What is the electron-releasing power of an alkyl group dependent on?
What is the electron-releasing power of an alkyl group dependent on?
- The resonance effect between the alkyl group and the aromatic ring
- The inductive effect of the alkyl group
- Steric hindrance between the alkyl group and the aromatic ring
- Number of hydrogens present on the alpha carbon atom (correct)
What is the consequence of hyperconjugation in alkyl benzene?
What is the consequence of hyperconjugation in alkyl benzene?
What is another name for the hyperconjugation effect?
What is another name for the hyperconjugation effect?
What is the fundamental requirement for a compound to exhibit hyperconjugation?
What is the fundamental requirement for a compound to exhibit hyperconjugation?
What is the effect of hyperconjugation on the heat of hydrogenation of a compound?
What is the effect of hyperconjugation on the heat of hydrogenation of a compound?
What is the resulting effect of hyperconjugation on the dipole moment of a molecule?
What is the resulting effect of hyperconjugation on the dipole moment of a molecule?
What is the term used to describe the movement of electrons from one atom to another in multibonded atoms at the demand of an attacking reagent?
What is the term used to describe the movement of electrons from one atom to another in multibonded atoms at the demand of an attacking reagent?
What type of effect is represented by a curved arrow ( ) showing the shifting of an electron pair?
What type of effect is represented by a curved arrow ( ) showing the shifting of an electron pair?
What is the type of effect that occurs when the transfer of electrons takes place towards the attacking reagent?
What is the type of effect that occurs when the transfer of electrons takes place towards the attacking reagent?
What is the phenomenon of hyperconjugation observed in the system X | -C=C-C=X?
What is the phenomenon of hyperconjugation observed in the system X | -C=C-C=X?
What is the type of effect that explains the meta directing influence and deactivating effect of CX3 group in electrophilic aromatic substitution reaction?
What is the type of effect that explains the meta directing influence and deactivating effect of CX3 group in electrophilic aromatic substitution reaction?
What determines the direction of the shift of electron pair in a multiple bond?
What determines the direction of the shift of electron pair in a multiple bond?
What is the type of effect that occurs when the transfer of electrons takes place away from the attacking reagent?
What is the type of effect that occurs when the transfer of electrons takes place away from the attacking reagent?
What is the order of preference of atoms or groups in the Cahn-Ingold-Prelog priority system based on?
What is the order of preference of atoms or groups in the Cahn-Ingold-Prelog priority system based on?
What does the symbol 'E' represent in the Cahn-Ingold-Prelog system?
What does the symbol 'E' represent in the Cahn-Ingold-Prelog system?
What happens when the order of preference of groups cannot be settled on the first atom?
What happens when the order of preference of groups cannot be settled on the first atom?
What does the symbol 'Z' represent in the Cahn-Ingold-Prelog system?
What does the symbol 'Z' represent in the Cahn-Ingold-Prelog system?
Why do terminal alkenes such as propene, 1-butene, and 2-methyl propene not show geometrical isomerism?
Why do terminal alkenes such as propene, 1-butene, and 2-methyl propene not show geometrical isomerism?
What is the bond angle in a molecule with sp3 hybridization?
What is the bond angle in a molecule with sp3 hybridization?
What is the type of hybridization present in a molecule with two π bonds and one σ bond?
What is the type of hybridization present in a molecule with two π bonds and one σ bond?
What is the number of unused p-orbitals in a molecule with sp hybridization?
What is the number of unused p-orbitals in a molecule with sp hybridization?
What is the relationship between the number of bond pairs and the number of atoms attached to the central atom in the electron pair method?
What is the relationship between the number of bond pairs and the number of atoms attached to the central atom in the electron pair method?
What is the order of s-character in decreasing order for sp, sp2, sp3, and p orbitals?
What is the order of s-character in decreasing order for sp, sp2, sp3, and p orbitals?
What is the type of effect responsible for the orienting influence of alkyl group in o, p-positions and of group in toluene?
What is the type of effect responsible for the orienting influence of alkyl group in o, p-positions and of group in toluene?
What type of effect occurs when the transfer of electrons takes place towards the attacking reagent?
What type of effect occurs when the transfer of electrons takes place towards the attacking reagent?
In the system X | -C=C-C=X, what phenomenon is observed?
In the system X | -C=C-C=X, what phenomenon is observed?
What determines the direction of the shift of electron pair in a multiple bond?
What determines the direction of the shift of electron pair in a multiple bond?
