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The enolic form of butanone contains...

The enolic form of butanone contains

A

`12sigma " bonds ", 1pi " bond and 2 lone pairs of electrons "`

B

`11sigma " bonds ", 1pi " bond and 2 lone pairs of electrons "`

C

`12sigma " bonds ", 1pi " bond and 1 lone pairs of electrons "`

D

`10sigma " bonds ", 2pi " bond and 2 lone pairs of electrons "`

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The correct Answer is:
B
Condition for resonance
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