Write the formulas for the following coordination compounds:
(a) Tetraa mmineaqua chlorido cobalt (III) chloride
(b) Potassium tetrahydroxid ozincate (II)
(c) Potassium trioxalato aluminate (III)
(d) Dichloridobis (ethane-1,2-diamine) cobalt (III)
(e) Tetra carbonyl nickel (0)

Explanation

To write the formulas for the given coordination compounds, we will analyze each compound's name step by step.

### (a) Tetraa mmineaqua chlorido cobalt (III) chloride

1. **Identify the central metal ion**: The central metal ion is cobalt (Co).
2. **Determine the oxidation state**: The oxidation state of cobalt is +3 (indicated by (III)).
3. **Identify the ligands**: The ligands are:
- Tetraamine (4 NH₃)
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