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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
- IIT JAM
- Chemistry (CY)
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Dinesh khalmaniya 1
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III >II>I explanation- As the number of hyperconjugation increases, single bond characters in double bond increase or vice versa. here number of alpha H in I,II, and III are 0 , 3 and 6 respectively so number of hyperconjugation increases form left to right and hence bond C- C bond lengths also will be in order III > II > I
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Priyanshu kumar Best Answer
As the resonance or hyperconjugation increases double bond acquire single bond character and single bond acquire double bond character. Here more hyperconjugation occurs in case of C,then B then A..so more single bond character in C and hence more bond length. Thus order C>B>A
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