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Question

Increasing order of stability among the 3 main conformation of 2-fluoroethanol is:

A
eclipse, anti, gauche
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B
anti, gauche, eclipse
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C
eclipse, gauche, anti
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D
gauche, eclipse, anti
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Solution

The correct option is A eclipse, anti, gauche
Because of intermolecular H- bonding gauche conformation of 2-fluoroethanol is more stable than anti while eclipsed conformation is the least stable. Thus, increasing order of stability is eclipse, anti, gauche

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