Answer:
Following are the responses to the given points:
Step-by-step explanation:
In point a:
Its reaction provided is indeed a type of radioactive substitution reaction. Its fluoride group (F group) is a poor leaving group, in which carbon atoms attached to the carbon atom reducing their energy. Thus fluoride group replacement becomes complicated again for the thiol group.
In point b:
When fluoroacetamide is blended with cystine, they associate due to the proximity of ligands, resulting in the formation of a complex of hydrogen bond proteins.