Question:

Which of the following is a vicinal dihalide?

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Geminal = Same carbon; Vicinal = Adjacent carbons.
Updated On: Apr 28, 2026
  • 1,1-Dibromopropane
  • 1,2-Dibromopropane
  • 1,3-Dibromopropane
  • Benzal dibromide
  • 1,3-Dibromobutane
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The Correct Option is B

Solution and Explanation

Step 1: Concept
Vicinal dihalides have halogens attached to adjacent carbon atoms.

Step 2: Meaning

"Vicinal" comes from the Latin *vicinus* (neighbor).

Step 3: Analysis

In 1,2-Dibromopropane, the bromines are on $C_1$ and $C_2$. 1,1ndibromopropane is a geminal dihalide (same carbon).

Step 4: Conclusion

Hence, 1,2-Dibromopropane is a vicinal dihalide. Final Answer: (B)
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