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.
ORIGIN OF RADON. - released by radioactive decay of radium-226 (T 1/2 = 1620 years). - radium-226 is produced though the radioactive decay of uranium-238. - uranium-238 (T 1/2 = 4.51 billion yrs) comprises 4 ppm of the earths crust. - radon-222 is a non-reactive noble gas and itself is not a health hazard.PHYSICAL CHARACTERISTICS OF RADON. - an odorless, tasteless, invisible gas that mixes with air. radium-226 is produced though the radioactive decay of uranium-238. - uranium-238 (T 1/2 = 4.51 billion yrs) comprises 4 ppm of the earths crust. - radon-222 is a non-reactive noble gas and itself is not a health hazard. PHYSICAL CHARACTERISTICS OF RADON. - an odorless, tasteless, invisible gas that mixes with air.