Classify each of the following complexes as either high or low spin. Explain your answers
`[Co(H_(2)O)_(6)]^(2+),mu=4.6B.M.and[Co(CN)_(6)]^(4-),mu=1.9 B.M.`
`Fe(NO_(2))_(6)]^(4-),mu=0.0 B.M.and[Fe(H_(2)O)_(6)]^(3+),mu=5.94 B.M.`  

Explanation

To classify the given complexes as either high spin or low spin, we need to consider the nature of the ligands and the magnetic moments of the complexes. The magnetic moment (μ) is an indicator of the number of unpaired electrons in the complex, which in turn helps us determine whether the complex is high spin or low spin.

### Step-by-Step Solution:

1. **Understanding the Ligands:**
- **Water (H₂O)** is a weak field ligand.
- **Cyanide (CN⁻)** is a strong field ligand.
- **Nitrite (NO₂⁻)** can act as either a weak or strong field ligand depending on its coordination.
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