MCQ
Which of the following compounds are gem-dihalides?
- AEthylidene chloride
- BEthylene dichloride
- CMethylene chloride
- DBenzyl chloride
✓
Answer
- Ethylidene chloride
- Methylene chloride
Explanation:
Gem-dihalides are those dihalides in which two halogen atoms are bonded to the same carbon atom.
-
$\text{Cl}_2-\text{CH}-\text{CH}_3\\\text{Ethylidene chloride}$
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$\text{Cl}-\text{H}_2\text{C}-\text{CH}_2-\text{Cl}\\ \ \ \ \ \text{Ethylene dichloride}$
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$ \ \ \ \ \ \ \ \ \ \ \text{CH}_2\text{Cl}_2\\ \text{Methylene chloride}$
-
So, in (a) and (c) two halogen atoms are present on the same carbon atom and they are termed gem-dihalides.
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