Noble gases do not accur in …..

Options

A. nature
B. ores
C. atmosphere
D. sea water

Answer

**Step-by-Step Text Solution:**

1. **Understanding Noble Gases**: Noble gases are elements found in Group 18 of the periodic table. They include Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), and Radon (Rn).

2. **Occurrence in Nature**: Noble gases do occur in nature. For example, Helium is produced as a result of radioactive decay, and other noble gases like Neon and Argon are found in the Earth's atmosphere.

3. **Analysis of Options**:
- **Nature**: Noble gases are present in nature.
- **Ores**: Some noble gases can be found in ores, as Helium is produced from alpha decay in uranium ores.
- **Atmosphere**: Most noble gases are present in the atmosphere, with the exception of Radon due to its radioactivity and short half-life.
- **Seawater**: Noble gases have very low solubility in water, which means they do not occur in seawater.

4. **Conclusion**: Based on the analysis, the correct answer to the question "Noble gases do not occur in…" is **Seawater**.