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In the free radical chlorination of methane, the chain initiating step involves the formation of:

1. Chlorine free radical
2. Hydrogen chloride
3. Methyl radical
4. Chloromethyl radical

Correct answer: Chlorine free radical

Solution

The chain initiating step in free radical chlorination involves the homolytic cleavage of a chlorine molecule (Cl2) into two chlorine free radicals under the influence of UV light or heat.

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