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What type of isomerism is shown by the complex [Cr(en)3]3+? (2023)

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Question: What type of isomerism is shown by the complex [Cr(en)3]3+? (2023)

Options:

  1. Geometrical
  2. Optical
  3. Linkage
  4. Coordination

Correct Answer: Optical

Exam Year: 2023

Solution: 

The complex [Cr(en)3]3+ shows optical isomerism because it contains bidentate ligands (en = ethylenediamine) that can create non-superimposable mirror images.

What type of isomerism is shown by the complex [Cr(en)3]3+? (2023)

Practice Questions

Q1
What type of isomerism is shown by the complex [Cr(en)3]3+? (2023)
  1. Geometrical
  2. Optical
  3. Linkage
  4. Coordination

Questions & Step-by-Step Solutions

What type of isomerism is shown by the complex [Cr(en)3]3+? (2023)
  • Step 1: Identify the complex. The complex is [Cr(en)3]3+, where 'Cr' is chromium and 'en' stands for ethylenediamine.
  • Step 2: Understand what bidentate ligands are. Bidentate ligands can attach to a metal at two points. In this case, 'en' is a bidentate ligand.
  • Step 3: Recognize that the complex has three 'en' ligands. This means there are three bidentate ligands attached to the chromium ion.
  • Step 4: Learn about optical isomerism. Optical isomerism occurs when a molecule can exist in two forms that are mirror images of each other, like left and right hands.
  • Step 5: Determine if the complex can have non-superimposable mirror images. Since the arrangement of the three 'en' ligands around the chromium can create such mirror images, the complex exhibits optical isomerism.
  • Step 6: Conclude that the type of isomerism shown by [Cr(en)3]3+ is optical isomerism.
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