Coordination Compounds: Isomerism MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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IsomerismMediumQuestion 740007

Question

Geometrical isomers exist for which complex?

A
[Pt(NH₃)₂Cl₂] (square planar)
Correct
B
[Co(NH₃)₆]³⁺
C
[NiCl₄]²⁻
D
K₄[Fe(CN)₆]

Correct answer

[Pt(NH₃)₂Cl₂] (square planar)

Explanation

[Pt(NH₃)₂Cl₂] is a square planar complex Ma₂b₂ type — it shows cis (same side) and trans (opposite side) geometrical isomerism. Cisplatin (cis isomer) is the anticancer drug.

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