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Arrange the following molecules in the c...

Arrange the following molecules in the correct order of decreasing C-C bond length:

A

`C_(2)H_(6)gtC_(2)H_(4)gtC_(6)H_(6)gtC_(2)H_(2)`

B

`C_(2)H_(6)gtC_(6)H_(6)gtC_(2)H_(4)gtC_(2)H_(2)(C_(6)H_(6)"is benzene")`

C

`C_(2)H_(6)gtC_(2)H_(6)gtC_(2)H_(2)gtC_(6)H_(6)`

D

`C_(2)H_(6)gtC_(2)H_(4)gtC_(2)H_(2)gtC_(6)H_(6)`

Text Solution

Verified by Experts

The correct Answer is:
B
`C-C` B.O. `rArrC_(2)H_(6)rarr1,`
`C_(6)H_(6)rarr(3)/(2),C_(2)H_(4)rarr2`,
`C_(2)H_(2)rarr3`
B.O. `prop(1)/("B.L.")`
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