Find the oxidation number of Co in `[Co(NH_3)_6]^(3+)`

Explanation

To find the oxidation number of cobalt (Co) in the complex ion \([Co(NH_3)_6]^{3+}\), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the charge of the complex ion**: The given complex ion \([Co(NH_3)_6]^{3+}\) has an overall charge of +3.

2. **Assign oxidation number to cobalt**: Let the oxidation number of cobalt be \(x\).

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