The correct relationship between the bond lengths $a$ and $b$ is:
$C H_{3} - O | | C - a O - b C H_{3}$ ;

a = b

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b > a

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b < a

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impossible to predict

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Solution

The correct option is B $b > a$
As bond $^{'} a^{'}$ have partial double bond character due to resonance so it's bond length will be shorter than $^{'} b^{'}$ as it has only single bond character so bond length order is $b > a$ .

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Similar questions

C H_{3} - O | | C - O - C H_{3};

H - C \equiv C a - C \equiv C b - C H_{3}

a

b

(A) C H_{3} - C | F H - - C H - C H_{3}

(B) C | F H_{2} - C H_{2} - - C H - C H_{3}

C H_{3} - O (A) - + C H_{2}, C H_{3} - N H (B) - + C H_{2}, C H_{3} - S (C) - + C H_{2}

^{'} A^{'}

^{'} B^{'}

C H_{3} - C H_{3} + H N O_{3} {423 - 600 K - ----- \to}^{'} A^{'} {S n / c o n c . H C l - ------- \to}^{'} B^{'} + H_{2} O

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