NEET2026ChemistryCoordination CompoundsActual
Given below are two statements: Statement-I : [ Fe(ox) ₃]³⁻ is chiral. Statement-II : trans -[ Cr(H ₂ O )₂( ox )₂]^- is chiral. (Given : ox H₂ = HOOC - COOH) In light of the above statements, choose the most appropriate answer from the options given below:
Options
- AStatement-I is incorrect but Statement-II is correct.
- BBoth Statement-I and Statement-II are correct.
- CBoth Statement-I and Statement-II are incorrect.
- DStatement-I is correct but Statement-II is incorrect.
Correct answer
D. Statement-I is correct but Statement-II is incorrect.
Step-by-step solution
Statement-I: [ Fe(ox) ₃]³⁻ is an octahedral complex of the type [M(AA)₃] . It lacks any plane of symmetry or center of inversion. Hence, it is optically active and chiral. Statement-I is correct. Statement-II: trans -[ Cr(H ₂ O )₂( ox )₂]^- is an octahedral complex of the type trans -[M(AA)₂a₂] . In the trans isomer, the two identical monodentate ligands are placed opposite to each other. This geometry possesses a plane of symmetry passing through the metal and the bidentate ligands, as well as a center of inversio