Radon is the non-metallic natural radioactive element that belongs to the family of noble gases in group number 18 of the periodic table. The radon’s atomic number is 86 whereas its atomic mass is 222.
Xenon exists in the air to a really little degree (0.08 ppm). It is obtained as a by-product throughout the fractional distillation of air. Xenon is available readily in cylindrical tubes at high pressure. It reacts with fluorine yet not with water.