Question

Contrary to electrophilic addition reactions observed in alkenes, the aldehydes and ketones undergo nucleophilic addition reactions. (True/False)

Hint:

When a shape is "scooped out," the volume decreases, but the surface area actually increases because the interior of the hole is now exposed.

Answer 1

Concept:
Different functional groups undergo different types of reactions depending on electron distribution and bond polarity.
Explanation:

Alkenes contain a carbon–carbon double bond (\(C=C\)) rich in electron density.
Therefore, they attract electrophiles and undergo electrophilic addition reactions.
Aldehydes and Ketones:

They contain a polar carbonyl group (\(C=O\)).
Oxygen is more electronegative, making the carbonyl carbon partially positive.
This electrophilic carbon is attacked by nucleophiles.
Hence, aldehydes and ketones undergo nucleophilic addition reactions.
Example:
\[ RCHO + HCN \rightarrow RCH(OH)CN \] (HCN adds via nucleophilic addition)
Conclusion:
The given statement is correct. \[ \boxed{\text{True}} \]