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Organic Chemistry – Some Basic Principles And Techniques

Question
CBSEENCH11008416
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The stability of carbanions in the following

1 right parenthesis space RC space identical to straight C with minus on top straight H space 2 right parenthesis space straight C subscript 6 straight H subscript 5 to the power of minus 3 right parenthesis space straight R subscript 2 straight C space equals space straight C to the power of minus straight H 4 right parenthesis space straight R subscript 3 straight C space equals space straight C to the power of minus straight H

is in the order of 

  • (1) > (2) > (3) > (4)

  • (2) > (3) > (4) > (1)

  • (4) > (2) > (3)  > (1)

  • (1) > (3) > (2) ) (4)

Solution

A.

(1) > (2) > (3) > (4)

When s character increases, then electrons becomes more closer to the nucleus and structure is of lower energy and is more stable.
The stability order of carbanions is as:
RC space identical to straight C to the power of negative space end exponent space greater than thin space straight C subscript 6 straight H to the power of minus subscript 5 space greater than thin space straight R subscript 2 space straight C space equals space straight C to the power of minus straight H space greater than thin space straight R subscript 3 straight C space minus space straight C to the power of minus straight H subscript 2

Some More Questions From Organic Chemistry – Some Basic Principles and Techniques Chapter

What system of nomenclature is accepted universally?

What are isomers?

How many chain isomers are possible for pentane?

Which characteristic is common to different isomers of a compound?

 

Name three alkanes which do not show chain isomerism.

Name the types of structural isomerism shown by alkanes.

Name the four main types of structural isomerism. 

Write the three possible open chains of five carbon atoms

What types of structural isomerism is shown by the following pairs of organic compounds ?

Write the tautomer of acetaldehyde and write its IUPAC name.

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