Question:
Which of the following is the strongest base?
Which of the following is the strongest base?
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More available lone pair → stronger base.
Updated On: Apr 23, 2026
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The Correct Option is A
Solution and Explanation
Concept:
Basicity depends on availability of lone pair
Step 1: In (a), N is sp$^3$ hybridized → lone pair freely available.
Step 2: In (b), lone pair is in aromatic ring → less available.
Step 3: In (c), lone pair is partially delocalized.
Step 4: In (d), O is more electronegative → holds lone pair tightly.
Conclusion:
Most basic = option (a)
Step 1: In (a), N is sp$^3$ hybridized → lone pair freely available.
Step 2: In (b), lone pair is in aromatic ring → less available.
Step 3: In (c), lone pair is partially delocalized.
Step 4: In (d), O is more electronegative → holds lone pair tightly.
Conclusion:
Most basic = option (a)
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