Question

write the name and mathod of of preparation of two inert gas compounds.
दो अक्रिय गैस योगिक का नाम तथा इसे बनाने की विधि लिखिए ।
(उत्तर हिंदी में शब्द सिमा 150)

Answer 1

These elements are present in the atmosphere in small amounts. Some natural gas contains 1–2% helium by mass. Helium is isolated from natural gas by liquefying the condensable components, leaving only helium as a gas. The United States possesses most of the world’s commercial supply of this element in its helium-bearing gas fields. Argon, neon, krypton, and xenon come from the fractional distillation of liquid air. Radon comes from other radioactive elements. More recently, it was observed that this radioactive gas is present in very small amounts in soils and minerals. Its accumulation in well-insulated, tightly sealed buildings, however, constitutes a health hazard, primarily lung cancer.