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

chain initiating

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chain propagating

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chain growth

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chain terminating

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Solution

The correct option is 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.

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