Of the following, which has three electron bond in its structure ?

Options

A. Nitrous oxide
B. Nitric oxide
C. Dinitrogen trioxide
D. Nitrogen pentoxide

Answer

To determine which compound has a three-electron bond in its structure, we will analyze the given options: nitrous oxide (N2O), nitric oxide (NO), dinitrogen trioxide (N2O3), and nitrogen pentoxide (N2O5).

### Step-by-Step Solution:

1. **Understanding Three-Electron Bonds**:
A three-electron bond, also known as a "triple bond," typically involves the sharing of three pairs of electrons between two atoms. In the context of nitrogen compounds, this can occur in certain oxides of nitrogen.

2. **Analyzing the Options**:
- **Nitrous Oxide (N2O)**: The structure of nitrous oxide involves a double bond between the two nitrogen atoms and a single bond between one nitrogen and oxygen. Thus, it does not have a three-electron bond.
- **Nitric Oxide (NO)**: The structure of nitric oxide consists of a double bond between nitrogen and oxygen, which means it has a total of three shared electrons (one from nitrogen and two from oxygen). Therefore, it has a three-electron bond.
- **Dinitrogen Trioxide (N2O3)**: This compound contains nitrogen and oxygen but does not exhibit a three-electron bond in its structure.
- **Nitrogen Pentoxide (N2O5)**: This compound also does not have a three-electron bond in its structure.

3. **Conclusion**:
Based on the analysis, the compound that has a three-electron bond in its structure is **Nitric Oxide (NO)**.

### Final Answer:
The compound with a three-electron bond in its structure is **Nitric Oxide (NO)**.