General Science • ChemistryHard
Which of the following coordination complexes exhibits geometrical cis-trans isomerism?
A. Tetrahedral complexes with four identical monodentate ligands
B. Square planar complexes of the type M A2 B2✓ Correct Answer
C. Linear complexes with two coordination sites
D. Octahedral complexes with six identical ligands
💡 Solution & Explanation
Square planar complexes of the general formula M A2 B2 exhibit cis-trans isomerism because identical ligands can occupy adjacent positions or opposite positions across the central metal ion. Tetrahedral complexes with four identical ligands lack the geometric asymmetry required for cis-trans isomers. Alfred Werner pioneered coordination chemistry to explain these spatial arrangements.
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