Answer:
See explanation
Explanation:
First, we need to remember what a SN2 reaction mechanism consist.
The SN2 reaction involves displacement of a leaving group by a nucleophile. This reaction works best with methyl, primary and secondary halides not too bulky, because bulky alkyl groups block the backside attack of the nucleophile.
Because of the backside attack of the nucleophile, inversion of configuration occurs always.
In this case, we can say that is reactant has a (R) configuration, the product will suffer an inversion, and become (S) in a nucleophylic reaction (it's formed an elimination product too).
Now, in the picture below you'll the mechanism, transition state and products of reaction: