Werner's Theory
According to Werner's theory, in [Co(NH₃)₆]Cl₃, the coordination number of Co is:
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About This Question
- Subject
- chemistry
- Chapter
- coordination compounds
- Topic
- werner's theory
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
6
According to Werner's Coordination Theory:
- Primary Valence: Ionizable valence (oxidation state). For Co, it is +3. Cl⁻ ions satisfy this.
- Secondary Valence: Non-ionizable valence (Coordination Number). It represents the number of ligand donor atoms bonded to the metal.
- In [Co(NH3)6]Cl3, the species inside the square brackets constitute the coordination sphere.
- Six nitrogen atoms from six NH3 molecules are directly coordinated to the Cobalt center.
- Therefore, the coordination number is 6.
This easy difficulty chemistry question is from the chapter coordination compounds, covering the topic of werner's theory. It appeared in the 2025 exam.
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