Correct option is D
The correct answer is: (d) Radon.
Radon is a naturally radioactive noble gas. It is produced by the radioactive decay of uranium and thorium in the Earth's crust. Radon is known for its health risks as it can accumulate in homes and is a leading cause of lung cancer in non-smokers.
Information Booster:
- Neon: Neon is a stable noble gas, primarily used in lighting and signage.
- Krypton: Krypton is another stable noble gas, often used in lighting and lasers.
- Argon: Argon is a stable noble gas, commonly used in welding and as an inert gas in various applications.
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