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Question
Which of the following complexes is likely to show optical activity?
Options
[Cr(H2O)6]3+
trans-[Co(NH3)2(en)2]3+
trans-[Co(NH3)4Cl2]+
cis-[Co(NH3)2(en)2]3+
MCQ
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Solution
cis-[Co(NH3)2(en)2]3+
Explanation:
The correct answer is cis-[Co(NH3)2(en)2]3+ because it is chiral due to the asymmetrical arrangement of the ethylenediamine (en) ligands, making it optically active. The other complexes are symmetrical and do not show optical activity.
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