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B A CH l C 4 + ⎯→ ⎯ + • A and B in the above atmospheric reaction step are:

1. C 2 H 6 and Cl 2
2. 2 HCl C • and H 2
3. 3 H C • and HCl
4. C 2 H 6 and HCl

Correct answer: 3 H C • and HCl

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