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Which of the following molecules has the...

Which of the following molecules has the maximum number of `pi` bonds?

A

(1) `CH_(6)H_(12)`

B

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

C

(3) `CH_(2) = C = CH_(2)`

D

(4) `HCONHCH_(3)`

Text Solution

Verified by Experts

The correct Answer is:
B
Every double bond contains one `pi` bond and every triple bond contains two `pi` bonds.
`C_(6)H_(12)` is cyclohexane with `0 pi` bonds and
`18 sigma` bonds, `C_(5)H_(6)` is benzene with `3 pi` bonds
and `12 sigma` bonds, has `2 pi` bonds and `6 sigma`
bonds, and has `1 pi` bond and `9 sigma` bonds.
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