Radon is the name. But it is not radioactive in the sense like in the movies, where your hair starts falling out and your kids have psychic powers! The exposure rate has been said to be between 4 and 14 rems per year.
The name for the time required for half of a radioactive element to decay into a stable element is called the half-life. It is a constant value unique to each radioactive isotope, and it is used to measure the rate of radioactive decay.
The gaseous products of a disintegrating radioactive substance such as thoron or radon usually include isotopes of helium or polonium. These isotopes are formed as a result of radioactive decay and are emitted in the form of gas. They can pose a health risk if inhaled, as they are radioactive and can accumulate in the lungs.
The element with "qg" as part of its name is Roentgenium, with the chemical symbol Rg. It is a synthetic element with atomic number 111 and is highly radioactive.
Radon does not have a specific Greek or Latin name. The name "radon" itself comes from the element's radioactive properties and was named after the element radium from which it is derived.
Radiocarbon is another name for carbon 14, which is a weakly radioactive isotope of the element carbon.
Radium (Ra)
The name for the element with the atomic symbol Cf is Californium. Californium is a radioactive metallic chemical element with the atomic number 98. It is a transuranium element and is commonly used in research and nuclear applications.
The change undergone by an atom of an element made radioactive by bombardment with high-energy protons is called transmutation. This process can result in the creation of a different element or a different isotope of the same element.
The meaning of protactinium is before actinium. The name is from 1949, probably selected by IUPAC.
Francium is radioactive, extremely rare, and was discovered in France (hence the name). It is pretty much useless because of its short half-life and rarity.
I don't think there is an element or compound with that name; you may want to check the spelling and ask again. If you mean "lutetium", it has both stable and unstable (i.e., radioactive) isotopes.
Actinium (Ac) is a chemical element.Actinoids is the name of the radioactive elements family which contain actinium.