Write the formulate of the following coordination compounds :
(i) sodium pentacyanonitrosylsulphidoferrate (III)
(ii) potassium tetrahydroxozincate (II)

Explanation

To write the formulas for the given coordination compounds, we need to identify the components of each compound and their respective charges. Let's break down each compound step by step.

### (i) Sodium pentacyanonitrosylsulphidoferrate (III)

1. **Identify the metal and its oxidation state**:
- The metal in this compound is iron (ferrate), and it is in the +3 oxidation state (indicated by (III)).

2. **Identify the ligands**:
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