For the complex ion of `[Co(NH_3)_6]^(3+)` :
State the magnetic nature of the complex.

Explanation

To determine the magnetic nature of the complex ion \([Co(NH_3)_6]^{3+}\), we can follow these steps:

### Step 1: Determine the oxidation state of cobalt
In the complex \([Co(NH_3)_6]^{3+}\), ammonia (\(NH_3\)) is a neutral ligand, which means it does not contribute to the charge. Therefore, the oxidation state of cobalt can be calculated as follows:

Let the oxidation state of cobalt be \(x\). Since there are six ammonia ligands contributing zero charge, we have:
\[
x + 0 = +3 \implies x = +3
...