Advertisements
Advertisements
प्रश्न
Distinguish between Electrophile and nucleophile.
Advertisements
उत्तर
| No. | Electrophile | Nucleophile |
| 1. | An electrophile is an electron-deficient species. | A nucleophile is an electron-rich species. |
| 2. | It is attracted towards negative charges (electron seeking). | It is attracted towards a positive charge (nucleus seeking). |
| 3. | It attacks a nucleophilic center in the substrate and brings about an electrophilic reaction | It attacks the electrophilic center in the substrate and brings about a nucleophilic reaction. |
| 4. | It is an electron pair acceptor. (Lewis acid) | It is an electron-pair donor. (Lewis base) |
| 5. | It can be a positively charged ion or a neutral species having a vacant orbital. | It can be negatively charged ion or neutral species having at least one lone pair of electrons |
| 6. | e.g. H+, Br+,\[\ce{NO^+_2}\], BF3, AlCl3, etc. | e.g. OH-, Cl-, CN-, etc. |
APPEARS IN
संबंधित प्रश्न
Find out the most stable species from the following. Justify
`dot"CH","CH"_3-dot"CH" - "CH"_3,` \[\begin{array}{cc}\ce{CH3 -\dot{C} - CH3}\\
|\phantom{.}\\\phantom{..}\ce{CH3}\end{array}\]
Draw a resonance structure of the following:
Acetate ion
Write true or false. Correct the false statement.
Free radicals are negatively charged species.
Write true or false. Correct the false statement.
Aniline is a heterocyclic compound.
Draw all the no-bond resonance structures of isopropyl carbocation.
Choose the correct option.
The homologous series of alcohols has general molecular formula ______.
Choose the correct option.
The delocalization of electrons due to overlap between p orbital and sigma bond is called _______.
Predict the order of reactivity of the following compounds by SNl reaction mechanism.
\[\ce{\underset{\text{(I)}}{C6H5CH(C6H5)Cl}}\]
\[\ce{\underset{\text{(II)}}{C6H5CH2Cl}}\]
\[\ce{\underset{\text{(III)}}{C6H5C(CH3)(C6H5)Cl}}\]
Which of the following is NOT an electrophile?
Which of the following is the strongest nucleophile?
Which of the following statements is INCORRECT about hyperconjugation?
Which of the following is TRUE for homolytic fission?
Identify the reagent used in the following reaction:
\[\ce{CH3 - CH2 - Br ->[?] CH3 - CH2 - OH}\]
The best reagent for the following conversion is:

The +I inductive effect is shown by which of the following groups?
The overlap of σ-p orbitals is called ____________.
Identify the group that exerts electron withdrawing resonance effect.
Arrange the following free radicals in order of decreasing stability.
- Methyl
- Vinyl
- Allyl
- Benzyl
Identify the α-carbons in the following species and give the total number of α-hydrogen.
\[\ce{CH3 - CH2 - \overset{⊕}{C}H - CH2 - CH3}\]
Identify the α - carbons in the following species and give the total number of α-hydrogen.
\[\ce{CH3 - CH2 - \overset{⊕}{C}H - CH2 - CH3}\]
Identify the α-carbons in the following species and give the total number of α-hydrogen.
\[\ce{CH2 = CH - CH2 - CH3}\]
Identify the α - carbons in the following species and give the total number of α-hydrogen in each.
\[\ce{CH3 - CH2 - \overset{\oplus}{C}H -CH2 - CH2 }\]
Identify the α - carbons in the following species and give the total number of α-hydrogen in each.
\[\ce{CH2 = CH - CH2 - CH3}\]
Identify the α - carbon in the following species and give the total number of α-hydrogen.
\[\ce{CH3 - CH2 - \overset{\oplus}{C}H -CH2 - CH3}\]
Identify the α-carbons in the following species and give the total number of α-hydrogens.
\[\ce{CH3 - CH2 - \overset{⊕}{C}H - CH2 - CH3}\]
