In ortho `H_(2)` the correct statement/s is/are

Options

A. (A) The two nuclei have same spin
B. (B) The two nuclei have oppsite spin
C. (C) The two electrons have same spin
D. (D) The two electrons have opposite spin

Answer

To solve the question regarding ortho hydrogen, let's break it down step by step.

### Step 1: Understanding Ortho and Para Hydrogen
Ortho hydrogen and para hydrogen are two different forms of molecular hydrogen (H₂) based on the spins of the two hydrogen nuclei (protons).

- **Ortho Hydrogen**: In ortho hydrogen, the two nuclei have the same spin (both are aligned in the same direction).
- **Para Hydrogen**: In para hydrogen, the two nuclei have opposite spins (one is aligned up, and the other is aligned down).

### Step 2: Analyzing the Statements
Now, let's analyze the statements given in the question:

1. **The 2 nuclei have same spin**: This statement is true for ortho hydrogen.
2. **The 2 nuclei have opposite spin**: This statement is false for ortho hydrogen (it describes para hydrogen).
3. **The 2 electrons have same spin**: This statement is not applicable since hydrogen molecules consist of two protons and do not have electrons in the context of ortho vs. para distinction.
4. **The 2 electrons have opposite spin**: Similar to the previous point, this statement is also not applicable.

### Step 3: Conclusion
From the analysis, we conclude that the only correct statement regarding ortho hydrogen is that the two nuclei have the same spin.

### Final Answer
The correct statement regarding ortho hydrogen is:
- The 2 nuclei have the same spin.