At sun atmosphere which of the following forms is stable :

Options

A. Ortho H
B. Para H
C. Molecular H
D. None

Explanation

To solve the question regarding the stability of hydrogen forms in the sun's atmosphere, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Environment**: The sun's atmosphere is characterized by extremely high temperatures, typically around 5,500 degrees Celsius (or more). This high temperature affects the state of matter.

2. **Identify Forms of Hydrogen**: Hydrogen can exist in several forms, including:
- Molecular hydrogen (H₂)
- Atomic hydrogen (H)
- Ionic hydrogen (H⁺)

3. **Analyze Stability at High Temperatures**: At such high temperatures, molecular hydrogen (H₂) tends to dissociate into atomic hydrogen (H). Additionally, the extreme conditions can lead to the ionization of hydrogen, resulting in the formation of hydrogen ions (H⁺).

4. **Conclusion on Stability**: Given the high-energy environment of the sun, molecular hydrogen (H₂) is unstable and will not exist in significant amounts. Instead, hydrogen primarily exists in atomic (H) or ionic (H⁺) forms, which are not considered stable forms in the conventional sense.

5. **Final Answer**: Therefore, the correct conclusion is that none of the stable forms of hydrogen exist in the sun's atmosphere. The answer is option D: none of these.