Geometrical Isomerism
Number of geometrical isomers possible for [Pt(NH3)2Cl2] (square planar):
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About This Question
- Subject
- chemistry
- Chapter
- coordination compounds
- Topic
- geometrical isomerism
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
2
- Complex Type: This is an MA2B2 type square planar complex.
- Isomers:
- Cis-isomer: Similar ligands are situated adjacent (90°) to each other. Name: Cis-platin (used in chemotherapy).
- Trans-isomer: Similar ligands are situated opposite (180°) to each other.
- Geometry Note: Geometrical isomerism is common in square planar (CN=4) and octahedral (CN=6) complexes, but not possible in tetrahedral complexes because all positions are equivalent and adjacent.
This medium difficulty chemistry question is from the chapter coordination compounds, covering the topic of geometrical isomerism. It appeared in the 2025 exam.
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