Question

what is mechanism?...wht is nucleophile​

Answer 1

Answer:

Mechanism of Nucleophilic Substitution. The term SN2 means that two molecules are involved in the actual transition state: ... Since the nucleophile is free to attack from either side, this reaction is associated with racemization. In both reactions, the nucleophile competes with the leaving group.

Answer 2

Answer:

• A mechanism is a device that transforms input forces and movement into a desired set of output forces and movement.
• A nucleophile is electron rich species and donates electron pairs to electron deficient species.

Explanation:

• A mechanism is usually a piece of a larger process, known as a mechanical system or machine.
• a nucleophile is a chemical species that forms bonds with electrophiles by donating an electron pair. All molecules and ions with a free pair of electrons or at least one pi bond can act as nucleophiles. Because nucleophiles donate electrons, they are Lewis bases.