Arrange the given gem-diols in decreasing ord | vedclass

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Question

(B) The stability of gem-diols in cyclic systems is governed by the relief of angle strain.In a three-membered ring $(I)$,the bond angle is $60^{\circ

Vedclass · Accepted Answer

$III > II > I$

Vedclass · Answer

(B) The stability of gem-diols in cyclic systems is governed by the relief of angle strain.In a three-membered ring $(I)$,the bond angle is $60^{\circ}$,which is highly strained.In a four-membered ring $(II)$,the bond angle is $90^{\circ}$,which has less strain than the three-membered ring.In a five-membered ring $(III)$,the bond angle is $108^{\circ}$,which is closest to the ideal tetrahedral angle of $109.5^{\circ}$,resulting in the least angle strain.Therefore,the stability increases as the ring size increases from three to five members.The decreasing order of stability is $III > II > I$.

Arrange the given gem-diols in decreasing order of their stability.

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