Question

In free radical mechanism, the step in which two very large free radicals combine with each other is called the _______ step.

• A. chain initiating
• B. chain propagating
• C. chain growth
• D. chain terminating

Answer 1

Answer:

D. chain terminating

The final step in which the product radical react with each other to form a polymerised product is called the chain terminating step. The other two steps involve reaction of one free radical with the unsaturated molecule.