The compound which contains both covalent and coordinate bond is

Options

A. `C_(2)H_(5)NC`
B. `C_(2)H_(5)CN`
C. `HCN`
D. None of these

Explanation

To determine which compound contains both covalent and coordinate bonds, we need to analyze the nature of the bonds in various compounds.

### Step-by-Step Solution:

1. **Understand the Definitions**:
- **Covalent Bond**: A bond formed by the sharing of electrons between two atoms.
- **Coordinate Bond**: A type of covalent bond where one atom donates both electrons to the bond, while the other atom does not contribute any electrons.

2. **Identify the Compounds**:
- We need to evaluate the given options (not provided in the question, but typically they would be chemical formulas) to find out which one exhibits both types of bonding.

3. **Analyze a Sample Compound**:
- Let's consider a compound like C2H5NC (ethanamine).
- In this compound, the carbon atoms (C) are bonded to hydrogen atoms (H) through covalent bonds.
- The nitrogen atom (N) has a lone pair of electrons that can form a coordinate bond with another atom, such as carbon.

4. **Determine Bond Types**:
- In C2H5NC:
- The C-H bonds are covalent.
- The bond between nitrogen and carbon, where nitrogen donates its lone pair to carbon, is a coordinate bond.

5. **Conclusion**:
- Therefore, C2H5NC contains both covalent and coordinate bonds.

### Final Answer:
The compound which contains both covalent and coordinate bonds is C2H5NC (ethanamine).

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