MHT CET 2024 Chemistry question

Which of following is NOT optically active compound?

(A)1,2-Diiodobutane
(B)1,3-Diiodobutane
(C)1,4-DiiodobutaneCorrect
(D)2,3-Diiadoboutane

Answer: (C)

Solution

A compound is optically active if it has a chiral carbon (four different groups) and no symmetry element. 1,2-Diiodobutane ICH_2-CH(I)-CH_2CH_3: C2 is chiral (H, I, , ) so it is active. 1,3-Diiodobutane ICH_2-CH_2-CH(I)-CH_3: C3 is chiral (H, I, CH, ) so it is active.

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Question ID VK-099844