The compound which contains both ionic and covalent bonds is

Options

A. `CH_(4)`
B. `H_(2)`
C. `KCN`
D. `KCl`

Answer

To determine which compound contains both ionic and covalent bonds, we can analyze the given options step by step.

### Step 1: Identify the nature of bonds in each compound.
- **Option 1: CH₄ (Methane)**
- CH₄ is composed of carbon and hydrogen atoms. The bonds between carbon and hydrogen are covalent bonds. Since all the bonds are covalent, this compound does not contain ionic bonds.

- **Option 2: H₂ (Hydrogen)**
- H₂ consists of two hydrogen atoms bonded together by a single covalent bond. There are no ionic bonds present in this molecule.

- **Option 3: KCN (Potassium Cyanide)**
- KCN consists of potassium ions (K⁺) and cyanide ions (CN⁻). The bond between K⁺ and CN⁻ is ionic due to the transfer of an electron from potassium to cyanide. Within the cyanide ion (CN⁻), there is a triple bond between carbon and nitrogen, which is a covalent bond. Therefore, KCN contains both ionic and covalent bonds.

- **Option 4: KCl (Potassium Chloride)**
- KCl is made up of potassium ions (K⁺) and chloride ions (Cl⁻). The bond between K⁺ and Cl⁻ is purely ionic, with no covalent bonds present.

### Step 2: Conclusion
After analyzing all options, we find that the only compound that contains both ionic and covalent bonds is **KCN**.

### Final Answer:
The compound which contains both ionic and covalent bonds is **KCN**.

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