Dinitrogen is Combination of

Options

A. liquid-liquid
B. solid-solid
C. liquid-gas
D. gas-gas

Explanation

To solve the question "Dinitrogen is a combination of," we will analyze the options provided and understand what dinitrogen (N2) is.

### Step-by-Step Solution:

1. **Understanding Dinitrogen**:
- Dinitrogen refers to the molecule consisting of two nitrogen atoms, which is represented as N2.

2. **Identifying the State of Dinitrogen**:
- Dinitrogen (N2) is a colorless, odorless, and tasteless gas at room temperature and pressure.

3. **Analyzing the Options**:
- The options provided are:
- A) Liquid-Liquid
- B) Solid-Solid
- C) Liquid-Gas
- D) Gas-Gas
- Since we have established that dinitrogen is a gas, we can eliminate options A, B, and C because they involve combinations that do not include gases.

4. **Conclusion**:
- The only option that correctly describes dinitrogen as a combination of two nitrogen atoms in the gaseous state is D) Gas-Gas.

Therefore, the correct answer is **D) Gas-Gas**.