The bonds in `K_4[Fe(CN)_6]` are

Options

A. The diamagnetic species is
B. All covalent
C. Ionic and covalent
D. Ionic, covalent and coordinate covalent

Explanation

To determine the types of bonds present in the coordination compound \( K_4[Fe(CN)_6] \), we can break down the structure and analyze the bonding interactions step by step.

### Step 1: Identify the Components of the Compound
The compound \( K_4[Fe(CN)_6] \) consists of:
- Potassium ions (\( K^+ \))
- A coordination complex \( [Fe(CN)_6]^{4-} \)

### Step 2: Analyze the Coordination Complex
The coordination complex \( [Fe(CN)_6]^{4-} \) contains:
- One iron (Fe) ion
- Six cyanide (CN) ligands

### Step 3: Determine the Type of Bonds in the Cyanide Ligands
Each cyanide ion (CN) consists of a carbon atom triple-bonded to a nitrogen atom. This triple bond is a strong covalent bond. The cyanide ion acts as a ligand, donating a pair of electrons to the metal center (Fe).

### Step 4: Identify the Bonding Between the Ligands and the Metal
The bonding between the cyanide ligands and the iron ion is characterized as coordinate covalent bonding. In this type of bond, the ligand donates both electrons to form a bond with the metal ion.

### Step 5: Summarize the Types of Bonds Present
In \( K_4[Fe(CN)_6] \):
- The bonds within the cyanide ligands (C≡N) are covalent bonds (specifically, triple bonds).
- The bonds between the cyanide ligands and the iron ion are coordinate covalent bonds.

### Final Answer
The bonds in \( K_4[Fe(CN)_6] \) include covalent bonds within the cyanide ligands and coordinate covalent bonds between the cyanide ligands and the iron ion.

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