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Chemistry
What will be the correct stability order of the different conformations of n -butane ?
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Q. What will be the correct stability order of the different conformations of $ n $ -butane ?
J & K CET
J & K CET 2018
Hydrocarbons
A
Fully-eclipsed $ > $ eclipsed $ > $ gauche $ > $ anti-staggered
9%
B
Anti-staggered $ > $ eclipsed $ > $ gauche $ > $ fully-eclipsed
9%
C
Anti-staggered $ > $ gauche $ > $ eclipsed $ > $ fully-eclipsed
77%
D
Gauche $ > $ anti-staggered $ > $ eclipsed $ > $ fully-eclipsed
5%
Solution:
The overall stability order is : (IV) > (II) > (III) > (I)
i.e. Anti (staggered) $>$ Gauche (skew) $>$ Eclipsed $>$ Fully eclipsed
