alleryIn Werner's compound CoCl₃·6NH₃, all NH₃ are bound to Co. Coordination number:
A3
B6 (octahedral, [Co(NH₃)₆]³⁺)
C9
D12
Answer & Solution
Correct answer: B. 6 (octahedral, [Co(NH₃)₆]³⁺)
CoCl₃·6NH₃ is [Co(NH₃)₆]Cl₃: 6 NH₃ ligands, octahedral geometry.
CN = 6. All 3 Cl⁻ are counter ions (precipitate with AgNO₃).
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