Non-Hodgkin lymphoma is broadly divided into two major groups: B-cell lymphomas (which develop from abnormal B-lymphocytes, which is most common), and T-cell lymphomas (which develop from abnormal T-lymphocytes). Lymphocytes are a type of white blood cell that helps the body fight infections.
The atomic number of radon (Rn) is 86 and the atomic weight of Rn is 222 grams/mole.
Confidence votes 77.6K. Radon-222 is one of the isotopes or the inert gas radon. It is the longest-lived occurring one, and it appears as a daughter of the radioactive decay of radium (226Ra).It is radioactive (as are all of radon's isotopes), and, as such presents a hazard to people.ranium is the source of radium, and from radium we see radon. Uranium is present in the ground in a number of types of rock, so radon could appear in soil samples, in ground water, or in the lower internal spaces in buildings (because is seeps in).