Radon, a radioactive and a very dense gas (9,73 g/L).
No, helium argon and radon are members of the noble gas family.
Radon gas levels in basements are often measured because basements have a higher likelihood of having elevated levels of radon due to the gas being released from the soil. Radon is a radioactive gas that can seep into buildings through cracks, gaps, and openings in the foundation, and long-term exposure to high levels of radon can lead to health issues such as lung cancer. Testing for radon in basements allows homeowners to take necessary steps to mitigate the risks.
These are the noble or inert gases, and they are all stable except for radon. Radon has no stable isotopes.
Radon is the largest noble gas element in terms of atomic size.
Radon (Rn)- APEX
Examples of gas: oxygen, hydrogen, methane, helium, radon, etc.
The ratio of effusion rates between helium and radon gas is approximately √(Molar mass of gas 2 / Molar mass of gas 1), which in this case would be √(222 / 4) = √55.5 ≈ 7.46. This means that radon gas effuses approximately 7.46 times slower than helium gas under the same conditions.
Helium is the noble gas commonly used in radiotherapy.
Helium has 2 electrons and Radon has 86 electrons but both have 8 valence electrons (8 electrons in their outermost shells)
helium, neon, argon, krypton, xenon and radon
Helium, Neon, Argon, Krypton, Xenon, and Radon
helium, neon, argon, krypton, xenon and radon