Fundamental Concepts in Organic Reaction Mechanism

Write correct order of stability of following carbocations :

            

          

Rank the following free radicals in order of decreasing stability:

$\left(\text{I}\right){\text{C}}_6{\text{H}}_5\stackrel{•}{\text{C}}{\text{HC}}_6{\text{H}}_5$

$\left(\text{I}\text{I}\right){\text{C}}_6{\text{H}}_5\stackrel{•}{-\text{C}\text{H}}-\text{C}\text{H}={\text{C}\text{H}}_2$

$\left(\text{I}\text{I}\text{I}\right)\text{C}{\text{H}}_3\stackrel{•}{-\text{C}\text{H}}-\text{C}{\text{H}}_3$

$\left(\text{I}\text{V}\right){\text{C}}_6{\text{H}}_5\stackrel{•}{-\text{C}\text{H}}-\text{C}{\text{H}}_3$

$\left(\text{V}\right)\text{C}{\text{H}}_3{\text{CH}}_2{\text{CH}}_2{{\text{CH}}_2\stackrel{•}{\text{C}}\text{H}}_2$

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How do you identify a weak electrophile?

How do you identify a weak electrophile?

What are the differences between nucleophilicity and basicity?

Which is best nucleophile in polar aprotic solvent?

Which is best nucleophile in polar aprotic solvent?

Which is best nucleophile in polar aprotic solvent?

Which is best nucleophile in polar protic solvent?

Which is best nucleophile in polar protic solvent?

Which is the best nucleophile among halides in polar protic solvent?

Which one among aldehyde and ketone have higher electrophilicity?

Which one among aldehyde and ketone have higher electrophilicity?

Which one among aldehyde and ketone have higher electrophilicity?

How do you identify a weak electrophile?

How do you identify a weak electrophile?

What do you understand by strong electrophiles?

State the criteria of an electrophile to be called as strong electrophile.