# Exercises

Exercise

From which side does the nucleophile in an $SN2$ reaction approach the substrate?

Please make a choice.

Please make a choice.

correct

wrong

partly correct

This is the right answer

 From the front side. No, sorry. From the back side. Correct! From the bottom. Sorry, that is not correct. From the top side. Sorry, that is wrong. From all sides. No, sorry.
Exercise

In the $SN2$ reaction's transition state, the central carbon is $sp2$-hybridized, while the remaining three substituents are accordingly arranged trigonal planar around the central carbon. Where is the negative charge located?

Please make a choice.

Please make a choice.

correct

wrong

partly correct

This is the right answer

 Completely on the nucleophile. Sorry, that is wrong. Completely on the leaving group. No, sorry. It is distributed between the nucleophile and the leaving group. That is correct! It is distributed between the central carbon and the leaving group. Sorry, that is not correct. It is distributed between the nucleophile and the central carbon. No, sorry.
Exercise

The rejection of the three remaining substituents during an $SN2$ reaction leads to ...

Please make a choice.

Please make a choice.

correct

wrong

partly correct

This is the right answer

 ... the inversion of configuration at the central ligand. No, sorry. ... the invasion of configuration at the central carbon. Sorry, that is wrong. ... the inversion of connectivity at the central carbon. No, sorry. ... the inversion of configuration at the central carbon. Yes, that is correct! ... the retention of configuration at the central carbon. Sorry, that is not correct.