Radon
Radon is an element that is on the periodic table of elements. It is a member of the family called the noble gases, which is group number 18. Radon is a gas. It is a gas at 298 k. it is the heaviest known mononuclear gas at that temperature. Radon is also colorless. When it is cooled below the freezing point, radon exhibits a brilliant phosphorescence, which becomes yellow as the temperature is lowered. At the temperature of liquid air it is sort of an orangish-red. The noble gases can be found on the very right side of the periodic table of elements. Radon has been around for quite some time. Radon comes from the element radium, which is derived from the element uranium. After radium has been 1,620 days old, radon forms 3.8 days afterwards. Radon is most often produced by the decay of radium in the crust of the earth. Radon was first discovered by a man named Fredrich Ernst Dorn. Mr. Dorn discovered thi
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Approximate Word count = 625
Approximate Pages = 3 (250 words per page double spaced)
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