Which of the following is diamagnetic?
Show Hint
- $H_{2}^{+}$
- $O_{2}$
- $Li_{2}$
- $He_{2}^{+}$
The Correct Option is C
Solution and Explanation
Molecules or ions having no unpaired electrons are diamagnetic.
Step 2: Analysis
For $Li_{2}$ (6 electrons), the configuration is $\sigma 1s^{2}, \sigma^{*} 1s^{2}, \sigma 2s^{2}$.
Step 3: Conclusion
Since all electrons are paired, it is diamagnetic.
Final Answer: (C)
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