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.
Answer Wiki. Radon is the noble gas which occurs naturally in radioactive form, being a decay product of U238. It is not really practical for industrial use because all its isotopes have very short half-lives, the longest being 3.8 days.