When two halogen atoms are attached to same carbon atom then it is :

Options

A. vic-dihalide
B. gem-dihalide
C. `alpha,omega`-halide
D. `alpha,beta`-halide

Explanation

To solve the question, "When two halogen atoms are attached to the same carbon atom then it is:", we need to analyze the options provided and understand the terminology used in organic chemistry related to halides.

### Step-by-Step Solution:

1. **Understanding the Terminology**:
- In organic chemistry, when we have halogen atoms (like Cl, Br, I) attached to carbon atoms, the arrangement of these halogens can be described using specific terms.

2. **Identifying the Types of Dihalides**:
- **Vicinal Dihalide**: This refers to a compound where two halogen atoms are attached to adjacent carbon atoms. For example, if we have a structure like CH2Cl-CHCl2, it is a vicinal dihalide.
- **Geminal Dihalide**: This refers to a compound where two halogen atoms are attached to the same carbon atom. For example, in a structure like CHCl2-CH3, the carbon has two Cl atoms attached to it, making it a geminal dihalide.

3. **Analyzing the Question**:
- The question specifically states that two halogen atoms are attached to the **same carbon atom**. This directly points to the definition of a geminal dihalide.

4. **Conclusion**:
- Therefore, when two halogen atoms are attached to the same carbon atom, it is referred to as a **geminal dihalide**.

### Final Answer:
**Geminal Dihalide**

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