Question
Which of the following compounds are gem-dihalides?
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Answer
- Ethylidene chloride
- Methylene chloride
Gem-dihalides are those dihalides in which two halogen atoms are bonded to the same carbon atom.
- $\text{Cl}_2-\text{CH}-\text{CH}_3\\\text{Ethylidene chloride}$
- $\text{Cl}-\text{H}_2\text{C}-\text{CH}_2-\text{Cl}\\ \ \ \ \ \text{Ethylene dichloride}$
- $ \ \ \ \ \ \ \ \ \ \ \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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