Ch3 c c ch3 h2. Ch2=ch – c(cl) = ch – ch3. ch2=ch-ch2-ch3+cl. ch2=ch-ch=ch2+cl. ch3-ch-ch3+cl2.

Ch3 c c ch3 h2. Ch2=ch – c(cl) = ch – ch3. ch2=ch-ch2-ch3+cl. ch2=ch-ch=ch2+cl. ch3-ch-ch3+cl2.
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