Chemistry - Coordination Chemistry Question with Solution | TestHub

(A) Correct

$[Mabcd]$ square planar complexes show 3 geometrical isomers: two cis and one trans.

(B) Correct

$[M(EDTA){]}^{n-}$ octahedral complexes form two optical isomers (Δ and Λ).

(C) Incorrect

$[M{A}_3{B}_3]$ octahedral complex shows only 2 geometrical isomers (fac and mer), not 3.

(D) Correct (as intended in concept-based questions)

Chelating ligands can give geometrical + optical isomerism in suitable coordination environments.