Give the chemical formula of potassium hexacyano ferrate (II)

Explanation

To find the chemical formula of potassium hexacyanoferrate (II), we can follow these steps:

### Step 1: Identify the Components
- The compound consists of potassium ions (K⁺) and the hexacyanoferrate ion (Fe(CN)₆²⁻).
- The "hexacyano" indicates that there are six cyanide ions (CN⁻) coordinated to the iron ion (Fe).

### Step 2: Determine the Oxidation State of Iron
- The name "hexacyanoferrate (II)" indicates that iron is in the +2 oxidation state.
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