Answer
1. Argon (Ar)
Welding & Metal Production: Inert atmosphere prevents oxidation in processes like TIG welding.
Light Bulbs: Prevents filament corrosion in incandescent and fluorescent bulbs.
2. Helium (He)
MRI Cooling: Utilized as a coolant in MRI machines due to its extremely low boiling point of −268.9 °C.
Welding Shielding Gas: Protects welds from oxidation in high-temperature environments.
3. Radon (Rn) (Radioactive)
Cancer Treatment: Used in radiotherapy to target tumors (rare due to its radioactivity).
Earthquake Prediction: Monitoring radon levels helps detect geological changes.ed with oxygen to prevent nitrogen narcosis.
Work Step by Step
Reasons for Noble Gas Uses;
A. Low Reactivity at High Temperatures – Ideal for welding and high-tech applications.
B. Inertness – They don’t react with other elements.
C. Stable Electron Configuration – Full valence shells prevent unwanted chemical reactions
D. Distinct Emission Spectra – Produce bright, colored light when ionized.
