# How does an SN2 reaction affect stereochemistry?

In an $\text{S"_"N} 2$ reaction, the stereochemistry of the product is inverted compared to that of the substrate.
An $\text{S"_"N} 2$ reaction is a backside attack. The nucleophile attacks the electrophilic center on the side that is opposite to the leaving group.
Here’s a video on $\text{S"_"N} 2$ stereochemistry.