CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317409
Assertion : Methyl cyanide is a nucleophile as well as an electrophile. Reason : Electrophiles are electron loving and nucleophiles attack positive centre.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
\(\mathrm{CH}_{3}-\mathrm{C} \equiv \mathrm{N}\) is a nucleophile due to the presence of a lone pair of electrons on \(\mathrm{N}\) and is an electrophile due to the presence of partial positive charge on C. Nucleophiles are electron rich species and like to attack +ve charge. As nuclues is with +ve charge, they are called nucleophiles. So, the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317410
Which behaves as a nucleophile as well as an electrophile?
All molecules or ions with free pair of electrons or at least one \(\pi\)-bond can act as nucleophile. Among given species \({\text{C}}{{\text{N}}^{\text{ - }}}{\text{,}}{\mkern 1mu} {\mkern 1mu} {{\text{H}}_{\text{2}}}\mathop {\mathop {\text{O}}\limits^{ \cdot \cdot } }\limits_{ \cdot \cdot } {\mkern 1mu} {\mkern 1mu} {\text{and}}\,\,{\text{R}}\mathop {\mathop {\text{O}}\limits^{ \cdot \cdot } }\limits_{{\mkern 1mu} \cdot \cdot } {\text{H}}\) are nucleophiles.
MHTCET - 2019
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317412
\(\left(\mathrm{CH}_{3}\right)_{4} \mathrm{~N}^{+}\) is neither an electrophile, nor a nucleophile because it
1 Does not have electron pair for donation as well as can attract electron pair
2 Neither has electron pair available for donation nor can accommodate electron since all shells of \(\mathrm{N}\) are fully occupied
3 Can act as Lewis acid and base
4 Can't be predicted
Explanation:
The octet around \(\mathrm{N}\) is complete, hence it has no electrophilic character. \(\mathrm{N}\) has no lone pair of electrons to act as nucleophile.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317413
Which of the following statements are correct for nucleophile?
1 All negatively charged species are nucleophiles
2 Nucleophiles are Lewis bases
3 Alkenes, alkynes, benzene and pyrrole are nucleophiles
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317409
Assertion : Methyl cyanide is a nucleophile as well as an electrophile. Reason : Electrophiles are electron loving and nucleophiles attack positive centre.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
\(\mathrm{CH}_{3}-\mathrm{C} \equiv \mathrm{N}\) is a nucleophile due to the presence of a lone pair of electrons on \(\mathrm{N}\) and is an electrophile due to the presence of partial positive charge on C. Nucleophiles are electron rich species and like to attack +ve charge. As nuclues is with +ve charge, they are called nucleophiles. So, the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317410
Which behaves as a nucleophile as well as an electrophile?
All molecules or ions with free pair of electrons or at least one \(\pi\)-bond can act as nucleophile. Among given species \({\text{C}}{{\text{N}}^{\text{ - }}}{\text{,}}{\mkern 1mu} {\mkern 1mu} {{\text{H}}_{\text{2}}}\mathop {\mathop {\text{O}}\limits^{ \cdot \cdot } }\limits_{ \cdot \cdot } {\mkern 1mu} {\mkern 1mu} {\text{and}}\,\,{\text{R}}\mathop {\mathop {\text{O}}\limits^{ \cdot \cdot } }\limits_{{\mkern 1mu} \cdot \cdot } {\text{H}}\) are nucleophiles.
MHTCET - 2019
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317412
\(\left(\mathrm{CH}_{3}\right)_{4} \mathrm{~N}^{+}\) is neither an electrophile, nor a nucleophile because it
1 Does not have electron pair for donation as well as can attract electron pair
2 Neither has electron pair available for donation nor can accommodate electron since all shells of \(\mathrm{N}\) are fully occupied
3 Can act as Lewis acid and base
4 Can't be predicted
Explanation:
The octet around \(\mathrm{N}\) is complete, hence it has no electrophilic character. \(\mathrm{N}\) has no lone pair of electrons to act as nucleophile.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317413
Which of the following statements are correct for nucleophile?
1 All negatively charged species are nucleophiles
2 Nucleophiles are Lewis bases
3 Alkenes, alkynes, benzene and pyrrole are nucleophiles
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317409
Assertion : Methyl cyanide is a nucleophile as well as an electrophile. Reason : Electrophiles are electron loving and nucleophiles attack positive centre.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
\(\mathrm{CH}_{3}-\mathrm{C} \equiv \mathrm{N}\) is a nucleophile due to the presence of a lone pair of electrons on \(\mathrm{N}\) and is an electrophile due to the presence of partial positive charge on C. Nucleophiles are electron rich species and like to attack +ve charge. As nuclues is with +ve charge, they are called nucleophiles. So, the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317410
Which behaves as a nucleophile as well as an electrophile?
All molecules or ions with free pair of electrons or at least one \(\pi\)-bond can act as nucleophile. Among given species \({\text{C}}{{\text{N}}^{\text{ - }}}{\text{,}}{\mkern 1mu} {\mkern 1mu} {{\text{H}}_{\text{2}}}\mathop {\mathop {\text{O}}\limits^{ \cdot \cdot } }\limits_{ \cdot \cdot } {\mkern 1mu} {\mkern 1mu} {\text{and}}\,\,{\text{R}}\mathop {\mathop {\text{O}}\limits^{ \cdot \cdot } }\limits_{{\mkern 1mu} \cdot \cdot } {\text{H}}\) are nucleophiles.
MHTCET - 2019
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317412
\(\left(\mathrm{CH}_{3}\right)_{4} \mathrm{~N}^{+}\) is neither an electrophile, nor a nucleophile because it
1 Does not have electron pair for donation as well as can attract electron pair
2 Neither has electron pair available for donation nor can accommodate electron since all shells of \(\mathrm{N}\) are fully occupied
3 Can act as Lewis acid and base
4 Can't be predicted
Explanation:
The octet around \(\mathrm{N}\) is complete, hence it has no electrophilic character. \(\mathrm{N}\) has no lone pair of electrons to act as nucleophile.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317413
Which of the following statements are correct for nucleophile?
1 All negatively charged species are nucleophiles
2 Nucleophiles are Lewis bases
3 Alkenes, alkynes, benzene and pyrrole are nucleophiles
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317409
Assertion : Methyl cyanide is a nucleophile as well as an electrophile. Reason : Electrophiles are electron loving and nucleophiles attack positive centre.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
\(\mathrm{CH}_{3}-\mathrm{C} \equiv \mathrm{N}\) is a nucleophile due to the presence of a lone pair of electrons on \(\mathrm{N}\) and is an electrophile due to the presence of partial positive charge on C. Nucleophiles are electron rich species and like to attack +ve charge. As nuclues is with +ve charge, they are called nucleophiles. So, the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317410
Which behaves as a nucleophile as well as an electrophile?
All molecules or ions with free pair of electrons or at least one \(\pi\)-bond can act as nucleophile. Among given species \({\text{C}}{{\text{N}}^{\text{ - }}}{\text{,}}{\mkern 1mu} {\mkern 1mu} {{\text{H}}_{\text{2}}}\mathop {\mathop {\text{O}}\limits^{ \cdot \cdot } }\limits_{ \cdot \cdot } {\mkern 1mu} {\mkern 1mu} {\text{and}}\,\,{\text{R}}\mathop {\mathop {\text{O}}\limits^{ \cdot \cdot } }\limits_{{\mkern 1mu} \cdot \cdot } {\text{H}}\) are nucleophiles.
MHTCET - 2019
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317412
\(\left(\mathrm{CH}_{3}\right)_{4} \mathrm{~N}^{+}\) is neither an electrophile, nor a nucleophile because it
1 Does not have electron pair for donation as well as can attract electron pair
2 Neither has electron pair available for donation nor can accommodate electron since all shells of \(\mathrm{N}\) are fully occupied
3 Can act as Lewis acid and base
4 Can't be predicted
Explanation:
The octet around \(\mathrm{N}\) is complete, hence it has no electrophilic character. \(\mathrm{N}\) has no lone pair of electrons to act as nucleophile.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317413
Which of the following statements are correct for nucleophile?
1 All negatively charged species are nucleophiles
2 Nucleophiles are Lewis bases
3 Alkenes, alkynes, benzene and pyrrole are nucleophiles
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317409
Assertion : Methyl cyanide is a nucleophile as well as an electrophile. Reason : Electrophiles are electron loving and nucleophiles attack positive centre.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
\(\mathrm{CH}_{3}-\mathrm{C} \equiv \mathrm{N}\) is a nucleophile due to the presence of a lone pair of electrons on \(\mathrm{N}\) and is an electrophile due to the presence of partial positive charge on C. Nucleophiles are electron rich species and like to attack +ve charge. As nuclues is with +ve charge, they are called nucleophiles. So, the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317410
Which behaves as a nucleophile as well as an electrophile?
All molecules or ions with free pair of electrons or at least one \(\pi\)-bond can act as nucleophile. Among given species \({\text{C}}{{\text{N}}^{\text{ - }}}{\text{,}}{\mkern 1mu} {\mkern 1mu} {{\text{H}}_{\text{2}}}\mathop {\mathop {\text{O}}\limits^{ \cdot \cdot } }\limits_{ \cdot \cdot } {\mkern 1mu} {\mkern 1mu} {\text{and}}\,\,{\text{R}}\mathop {\mathop {\text{O}}\limits^{ \cdot \cdot } }\limits_{{\mkern 1mu} \cdot \cdot } {\text{H}}\) are nucleophiles.
MHTCET - 2019
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317412
\(\left(\mathrm{CH}_{3}\right)_{4} \mathrm{~N}^{+}\) is neither an electrophile, nor a nucleophile because it
1 Does not have electron pair for donation as well as can attract electron pair
2 Neither has electron pair available for donation nor can accommodate electron since all shells of \(\mathrm{N}\) are fully occupied
3 Can act as Lewis acid and base
4 Can't be predicted
Explanation:
The octet around \(\mathrm{N}\) is complete, hence it has no electrophilic character. \(\mathrm{N}\) has no lone pair of electrons to act as nucleophile.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317413
Which of the following statements are correct for nucleophile?
1 All negatively charged species are nucleophiles
2 Nucleophiles are Lewis bases
3 Alkenes, alkynes, benzene and pyrrole are nucleophiles
