Question

why some bonds break after nucluophile attacks​

Answer 1

Answer:

the electron with the negative charge on the 'nucluophile attacks' or form a bond with the carbon atom to which the leaving group is attached with the final image the bond to the leaving group is broken when it's electrons became negative charge on the leaving group...

Answer 2

Answer:

As my understanding,

the nucleophilic attack of H2C=O is a two step process:-

i) The slight positive charge is open to attack by nucleophilic. The C=O losses it's pi bond and reduces down to a sigma bond.

ii) This enables the large negative charge on the pi orbital of O to attack a proton from its environment.

Explanation:

what I understood I wroted dear.........

hope it's helpful..!!