RE-NEET 2026 Chemistry Chirality in Complexes Assertion Reason Question
Given below are two statements: Statement-I: [Fe(ox)₃]³⁻ is chiral. Statement-II: trans-[Cr(H₂O)₂(ox)₂]⁻ is chiral. (Given: oxH₂ = HOOC - COOH) In light of the above statements, choose the most appropriate answer from the options given below:
Both Statement-I and Statement-II are incorrect.
Statement-I is correct but Statement-II is incorrect.
Statement-I is incorrect but Statement-II is correct.
Both Statement-I and Statement-II are correct.
Correct Answer
Detailed Explanation
Statement-I is correct because [Fe(ox)₃]³⁻ has a non-superimposable mirror image due to its arrangement of oxalate ligands, making it chiral. In contrast, Statement-II is incorrect because trans-[Cr(H₂O)₂(ox)₂]⁻ has a plane of symmetry, which means it is superimposable on its mirror image and thus not chiral.
The tempting wrong options fail because they either incorrectly classify the chirality of [Fe(ox)₃]³⁻ or misinterpret the symmetry of trans-[Cr(H₂O)₂(ox)₂]⁻. Remember, chirality requires a lack of symmetry, which is not the case for the second complex.
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