Preparation, Structure and Stability of Reaction Intermediates
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317423 The stability of carbanions in the following
A) \({\rm{RC}} \equiv \mathop {\rm{C}}\limits^ - \)
B)
supporting img
C) \({{\rm{R}}_{\rm{2}}}{\rm{C}} = \mathop {\rm{C}}\limits^ - {\rm{H}}\)
D) \({{\rm{R}}_{\rm{3}}}{\rm{C}} \equiv \mathop {\rm{C}}\limits^ - {{\rm{H}}_{\rm{2}}}\)
is in the order of

1 (B)>(C)>(D)>(A)
2 (D)>(B)>(C)>(A)
3 (A)>(C)>(B)>(D)
4 (A)>(B)>(C)>(D)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317424 The geometry of a methyl carbanion is likely to be

1 Pyramidal
2 Tetrahedral
3 Planar
4 Linear
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317425 The stability of carbanions in the following is
supporting img

1 (I) \(>\) (II) \(>\) (III) \(>\) (IV)
2 (II) \(>\) (III) \(>\) (IV) \(>\) (I)
3 (IV) \(>\) (II) \(>\) (III) \(>\) (I)
4 (I) \(>\) (III) \(>\) (II) \(>\) (IV)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317426 The ascending order of stability of the carbanion \(\mathrm{C}^{-} \mathrm{H}_{3}(\mathrm{P}), \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{C}^{-} \mathrm{H}_{2}(\mathrm{Q}),\left(\mathrm{CH}_{3}\right)_{2} \mathrm{C}^{-} \mathrm{H}(\mathrm{R})\) and
\(\mathrm{H}_{2} \mathrm{C}^{-}-\mathrm{CH}=\mathrm{CH}_{2}(\mathrm{~S})\) is

1 P \( < \) R \( < \) S \( < \) Q
2 R \( < \) P \( < \) S \( < \) Q
3 R \( < \) P \( < \) Q \( < \) S
4 P \( < \) R \( < \) Q \( < \) S
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317423 The stability of carbanions in the following
A) \({\rm{RC}} \equiv \mathop {\rm{C}}\limits^ - \)
B)
supporting img
C) \({{\rm{R}}_{\rm{2}}}{\rm{C}} = \mathop {\rm{C}}\limits^ - {\rm{H}}\)
D) \({{\rm{R}}_{\rm{3}}}{\rm{C}} \equiv \mathop {\rm{C}}\limits^ - {{\rm{H}}_{\rm{2}}}\)
is in the order of

1 (B)>(C)>(D)>(A)
2 (D)>(B)>(C)>(A)
3 (A)>(C)>(B)>(D)
4 (A)>(B)>(C)>(D)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317424 The geometry of a methyl carbanion is likely to be

1 Pyramidal
2 Tetrahedral
3 Planar
4 Linear
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317425 The stability of carbanions in the following is
supporting img

1 (I) \(>\) (II) \(>\) (III) \(>\) (IV)
2 (II) \(>\) (III) \(>\) (IV) \(>\) (I)
3 (IV) \(>\) (II) \(>\) (III) \(>\) (I)
4 (I) \(>\) (III) \(>\) (II) \(>\) (IV)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317426 The ascending order of stability of the carbanion \(\mathrm{C}^{-} \mathrm{H}_{3}(\mathrm{P}), \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{C}^{-} \mathrm{H}_{2}(\mathrm{Q}),\left(\mathrm{CH}_{3}\right)_{2} \mathrm{C}^{-} \mathrm{H}(\mathrm{R})\) and
\(\mathrm{H}_{2} \mathrm{C}^{-}-\mathrm{CH}=\mathrm{CH}_{2}(\mathrm{~S})\) is

1 P \( < \) R \( < \) S \( < \) Q
2 R \( < \) P \( < \) S \( < \) Q
3 R \( < \) P \( < \) Q \( < \) S
4 P \( < \) R \( < \) Q \( < \) S
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317423 The stability of carbanions in the following
A) \({\rm{RC}} \equiv \mathop {\rm{C}}\limits^ - \)
B)
supporting img
C) \({{\rm{R}}_{\rm{2}}}{\rm{C}} = \mathop {\rm{C}}\limits^ - {\rm{H}}\)
D) \({{\rm{R}}_{\rm{3}}}{\rm{C}} \equiv \mathop {\rm{C}}\limits^ - {{\rm{H}}_{\rm{2}}}\)
is in the order of

1 (B)>(C)>(D)>(A)
2 (D)>(B)>(C)>(A)
3 (A)>(C)>(B)>(D)
4 (A)>(B)>(C)>(D)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317424 The geometry of a methyl carbanion is likely to be

1 Pyramidal
2 Tetrahedral
3 Planar
4 Linear
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317425 The stability of carbanions in the following is
supporting img

1 (I) \(>\) (II) \(>\) (III) \(>\) (IV)
2 (II) \(>\) (III) \(>\) (IV) \(>\) (I)
3 (IV) \(>\) (II) \(>\) (III) \(>\) (I)
4 (I) \(>\) (III) \(>\) (II) \(>\) (IV)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317426 The ascending order of stability of the carbanion \(\mathrm{C}^{-} \mathrm{H}_{3}(\mathrm{P}), \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{C}^{-} \mathrm{H}_{2}(\mathrm{Q}),\left(\mathrm{CH}_{3}\right)_{2} \mathrm{C}^{-} \mathrm{H}(\mathrm{R})\) and
\(\mathrm{H}_{2} \mathrm{C}^{-}-\mathrm{CH}=\mathrm{CH}_{2}(\mathrm{~S})\) is

1 P \( < \) R \( < \) S \( < \) Q
2 R \( < \) P \( < \) S \( < \) Q
3 R \( < \) P \( < \) Q \( < \) S
4 P \( < \) R \( < \) Q \( < \) S
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317423 The stability of carbanions in the following
A) \({\rm{RC}} \equiv \mathop {\rm{C}}\limits^ - \)
B)
supporting img
C) \({{\rm{R}}_{\rm{2}}}{\rm{C}} = \mathop {\rm{C}}\limits^ - {\rm{H}}\)
D) \({{\rm{R}}_{\rm{3}}}{\rm{C}} \equiv \mathop {\rm{C}}\limits^ - {{\rm{H}}_{\rm{2}}}\)
is in the order of

1 (B)>(C)>(D)>(A)
2 (D)>(B)>(C)>(A)
3 (A)>(C)>(B)>(D)
4 (A)>(B)>(C)>(D)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317424 The geometry of a methyl carbanion is likely to be

1 Pyramidal
2 Tetrahedral
3 Planar
4 Linear
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317425 The stability of carbanions in the following is
supporting img

1 (I) \(>\) (II) \(>\) (III) \(>\) (IV)
2 (II) \(>\) (III) \(>\) (IV) \(>\) (I)
3 (IV) \(>\) (II) \(>\) (III) \(>\) (I)
4 (I) \(>\) (III) \(>\) (II) \(>\) (IV)
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES

317426 The ascending order of stability of the carbanion \(\mathrm{C}^{-} \mathrm{H}_{3}(\mathrm{P}), \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{C}^{-} \mathrm{H}_{2}(\mathrm{Q}),\left(\mathrm{CH}_{3}\right)_{2} \mathrm{C}^{-} \mathrm{H}(\mathrm{R})\) and
\(\mathrm{H}_{2} \mathrm{C}^{-}-\mathrm{CH}=\mathrm{CH}_{2}(\mathrm{~S})\) is

1 P \( < \) R \( < \) S \( < \) Q
2 R \( < \) P \( < \) S \( < \) Q
3 R \( < \) P \( < \) Q \( < \) S
4 P \( < \) R \( < \) Q \( < \) S
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