NEET Test Series from KOTA - 10 Papers In MS WORD
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317251
Compare the stability of resonating structures:
1 \({\text{I > II > III}}\)
2 \({\text{III > II > I}}\)
3 \({\text{I > III > II}}\)
4 \({\text{II > I > III}}\)
Explanation:
Resonating structure which does not possess any charge is most stable. Therefore, structure I is most stable. On comparing II and III, in III octet of carbon is incomplete, therefore it is least stable.
JEE - 2024
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317252
How many total resonance structures can be drawn for the following anion (include those without separation of charge)?
1 1
2 2
3 3
4 4
Explanation:
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317253
Increasing order of stability of the resonance structures is given. Choose the correct answer from the options given below.
1 C, D, B, A
2 D, C, B, A
3 D, C, A, B
4 C, A, B, D
Explanation:
Structure ' C ' is least stable as highly electronegative oxygen carries a positive charge. ' D ' is the most stable due to octet completion. Between '\({\text{A}}\)' and ' \({\text{B}}\) ', '\({\text{A}}\)' is less stable due to repulsion between the lone pair on nitrogen and the negative charge on carbon. Hence, the order is \(\mathrm{C} < \mathrm{A} < \mathrm{B} < \mathrm{D}\).
JEE - 2023
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317254
Which of the following statements about resonance is not correct?
1 The different resonance structures of a molecule have fixed arrangement of atomic nuclei.
2 The different resonance structures of a molecule should have same number of unpaired electrons
3 The hybrid structure has equal contribution from all the resonating strctures
4 None of the individual resonating structures explains the various characteristics of the molecule
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317251
Compare the stability of resonating structures:
1 \({\text{I > II > III}}\)
2 \({\text{III > II > I}}\)
3 \({\text{I > III > II}}\)
4 \({\text{II > I > III}}\)
Explanation:
Resonating structure which does not possess any charge is most stable. Therefore, structure I is most stable. On comparing II and III, in III octet of carbon is incomplete, therefore it is least stable.
JEE - 2024
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317252
How many total resonance structures can be drawn for the following anion (include those without separation of charge)?
1 1
2 2
3 3
4 4
Explanation:
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317253
Increasing order of stability of the resonance structures is given. Choose the correct answer from the options given below.
1 C, D, B, A
2 D, C, B, A
3 D, C, A, B
4 C, A, B, D
Explanation:
Structure ' C ' is least stable as highly electronegative oxygen carries a positive charge. ' D ' is the most stable due to octet completion. Between '\({\text{A}}\)' and ' \({\text{B}}\) ', '\({\text{A}}\)' is less stable due to repulsion between the lone pair on nitrogen and the negative charge on carbon. Hence, the order is \(\mathrm{C} < \mathrm{A} < \mathrm{B} < \mathrm{D}\).
JEE - 2023
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317254
Which of the following statements about resonance is not correct?
1 The different resonance structures of a molecule have fixed arrangement of atomic nuclei.
2 The different resonance structures of a molecule should have same number of unpaired electrons
3 The hybrid structure has equal contribution from all the resonating strctures
4 None of the individual resonating structures explains the various characteristics of the molecule
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317251
Compare the stability of resonating structures:
1 \({\text{I > II > III}}\)
2 \({\text{III > II > I}}\)
3 \({\text{I > III > II}}\)
4 \({\text{II > I > III}}\)
Explanation:
Resonating structure which does not possess any charge is most stable. Therefore, structure I is most stable. On comparing II and III, in III octet of carbon is incomplete, therefore it is least stable.
JEE - 2024
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317252
How many total resonance structures can be drawn for the following anion (include those without separation of charge)?
1 1
2 2
3 3
4 4
Explanation:
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317253
Increasing order of stability of the resonance structures is given. Choose the correct answer from the options given below.
1 C, D, B, A
2 D, C, B, A
3 D, C, A, B
4 C, A, B, D
Explanation:
Structure ' C ' is least stable as highly electronegative oxygen carries a positive charge. ' D ' is the most stable due to octet completion. Between '\({\text{A}}\)' and ' \({\text{B}}\) ', '\({\text{A}}\)' is less stable due to repulsion between the lone pair on nitrogen and the negative charge on carbon. Hence, the order is \(\mathrm{C} < \mathrm{A} < \mathrm{B} < \mathrm{D}\).
JEE - 2023
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317254
Which of the following statements about resonance is not correct?
1 The different resonance structures of a molecule have fixed arrangement of atomic nuclei.
2 The different resonance structures of a molecule should have same number of unpaired electrons
3 The hybrid structure has equal contribution from all the resonating strctures
4 None of the individual resonating structures explains the various characteristics of the molecule
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317251
Compare the stability of resonating structures:
1 \({\text{I > II > III}}\)
2 \({\text{III > II > I}}\)
3 \({\text{I > III > II}}\)
4 \({\text{II > I > III}}\)
Explanation:
Resonating structure which does not possess any charge is most stable. Therefore, structure I is most stable. On comparing II and III, in III octet of carbon is incomplete, therefore it is least stable.
JEE - 2024
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317252
How many total resonance structures can be drawn for the following anion (include those without separation of charge)?
1 1
2 2
3 3
4 4
Explanation:
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317253
Increasing order of stability of the resonance structures is given. Choose the correct answer from the options given below.
1 C, D, B, A
2 D, C, B, A
3 D, C, A, B
4 C, A, B, D
Explanation:
Structure ' C ' is least stable as highly electronegative oxygen carries a positive charge. ' D ' is the most stable due to octet completion. Between '\({\text{A}}\)' and ' \({\text{B}}\) ', '\({\text{A}}\)' is less stable due to repulsion between the lone pair on nitrogen and the negative charge on carbon. Hence, the order is \(\mathrm{C} < \mathrm{A} < \mathrm{B} < \mathrm{D}\).
JEE - 2023
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317254
Which of the following statements about resonance is not correct?
1 The different resonance structures of a molecule have fixed arrangement of atomic nuclei.
2 The different resonance structures of a molecule should have same number of unpaired electrons
3 The hybrid structure has equal contribution from all the resonating strctures
4 None of the individual resonating structures explains the various characteristics of the molecule
