Radon is a chemical element with symbol Rn and atomic number 86. It is a radioactive, colorless, odorless, tasteless noble gas, occurring naturally as a decay product of radium. Its most stable isotope, 222Rn, has a half-life of 3.8 days.Radon is one of the densest substances that remains a gas under normal conditions.t is a radioactive, colorless, odorless, tasteless noble gas, occurring naturally as a decay product of radium. Its most stable isotope, 222Rn, has a half-life of 3.8 days. Radon is one of the densest substances that remains a gas under normal conditions.
Top 10 unbelievable historical concurrencies. An angiomyolipoma is a benign fatty tumor that can form in kidneys. They are made up of muscle and vessels as well as fatty tissue.op 10 unbelievable historical concurrencies. An angiomyolipoma is a benign fatty tumor that can form in kidneys. They are made up of muscle and vessels as well as fatty tissue.
a benign tumor made up of blood vessels (hemangioma) or lymph vessels (lymphangioma). adj., adj angiomÂ´atous. angioma cavernoÂ´sum (cavernous angioma) cavernous hemangioma. angioma serpiginoÂ´sum a skin disease marked by minute vascular points arranged in rings on the skin. telangiectatic angioma an angioma made up of dilated blood vessels.