werner's theory

Question

According to Werner's theory, in [Co(NH₃)₆]Cl₃, the coordination number of Co is:

RankGuru · Accepted Answer

According to **Werner's Coordination Theory**:
1. **Primary Valence**: Ionizable valence (oxidation state). For $Co$, it is $+3$. Cl⁻ ions satisfy this.
2. **Secondary Valence**: Non-ionizable valence (**Coordination Number**). It represents the number of ligand donor atoms bonded to the metal.
- In $[Co(NH_3)_6]Cl_3$, the species inside the square brackets constitute the coordination sphere.
- Six nitrogen atoms from six $NH_3$ molecules are directly coordinated to the Cobalt center.
- Therefore, the coordination number is **6**.

Rank Guru

werner's theory

Select the correct option: