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Question

Arrange the following isomers of hexadiene in order of increasing stability(least stable first):
230030.png

A
I, II, III, IV
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B
II, IV, I, III
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C
I, III, IV, II
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D
IV, II, III, I
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Solution

The correct option is A I, III, IV, II
For the given isomers of hexadiene, the order of decreasing stability (least stable last) is
I>III>IV>II.
I is trans-trans, therefore most stable and II is cis-cis, therefore least stable.
Hence, the option C is correct answer. Note: trans double bond is more stable than cis double bond.

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