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.
\[\ce{\overset{+}{C}H3, \overset{+}{C}H2Cl, \overset{+}{C}Cl3}\]
Identify the α-carbons in the following species and give the total number of α-hydrogen.
\[\ce{CH_3 - CH_2 - \overset{⊕}{C}H-CH_2 - CH_3}\]
Identify the α-carbon in the following species and give the total number of α-hydrogens.
\[\ce{CH2 = CH - CH2 - CH3}\]
Draw a resonance structure of the following:
Buta-1,3-diene
Write true or false. Correct the false statement.
Homolytic fission involves the unsymmetrical breaking of a covalent bond.
Write true or false. Correct the false statement.
Aniline is a heterocyclic compound.
Choose the correct option.
Which of the following statements are true with respect to electronic displacement in a covalent bond?
a. Inductive effect operates through π bond
b. Resonance effect operates through σ bond
c. Inductive effect operates through σ bond
d. Resonance effect operates through π bond
Choose the correct option.
Hyperconjugation involves overlap of ______ orbitals.
Which of the following compound is highly reactive towards HCN?
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?
Identify the reagent used in the following reaction:
\[\ce{CH3 - CH2 - Br ->[?] CH3 - CH2 - OH}\]
The +I inductive effect is shown by which of the following groups?
Which of the following alkyl groups shows maximum positive inductive effect?
Which of the following alkyl groups shows least positive inductive effect?
How many tertiary carbon atoms and primary carbon atoms respectively are present in 2-iodo-3, 3- dimethyl pentane?
How many pi bonds and sigma bonds are present in following molecule?
Which element among the following does form pπ - pπ multiple bonds?
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 in it.
CH2 = CH − 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-carbon 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.
\[\ce{CH2 = CH - CH2 - CH3}\]
Which from following tests decides the straight chain structure of glucose?
