Radon
Uranium is a not a noble gas, but a metal, solid, radioactive, member of the actinides (actinoids) family.
helium
Helium
A radioactive noble gas is a noble gas element that has unstable isotopes, meaning they undergo radioactive decay. An example is radon, which is naturally occurring and emits alpha particles as it decays. These gases can pose health risks if inhaled, as their radioactive decay products can damage cells in the respiratory system.
1. Any hazard, but noble gases are not respirable. 2. Radon is very radioactive and dangerous.
helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe) and the radioactive radon (Rn)
Radon is a radioactive gas and one of the noble gases. Dangerous.
Noble gases
The element with the densest noble gas is radon (Rn). It is a radioactive noble gas that is heavier than the other noble gases, making it the densest.
Neon is a member of the noble gases, also called the inert gases.
Noble gases, such as helium, neon, argon, krypton, xenon, and radon, are generally non-toxic at normal atmospheric levels. However, radon, which is a radioactive noble gas, is a known carcinogen when present in high concentrations. It is important to be cautious when dealing with radon gas in indoor environments.
The Noble gases, these are unreactive elements which exist as single atoms due to them having a full outer shell of electrons.