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.
What is an Infantile Hemangioma? Infantile hemangiomas are benign vascular tumors of childhood, characterized by endothelial cell proliferation. They are the most common soft-tissue tumors of childhood, occurring in 3% to 10% of the population. The lesions are usually not detectable at birth but appear during the first 4 to 6 weeks of life.