JEE Main Chemistry question

Among the shown haloalkenes (i)–(iii), bearing Cl, F, Br and CH₃ substituents on the alkene carbons, which have 'Z' configuration?

(A)(i) only
(B)(ii) only
(C)(iii) only
(D)(i) and (iii)Correct

Answer: (D)

Solution

Assigning CIP priorities on each alkene carbon (Cl>F on one carbon of (i); Br>H on its partner — both higher-priority groups drawn on the same side gives Z) and repeating for (iii)

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Question ID VK-139122