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 …
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…things that I found about radon are the fact that there was absolutely no information on its oxidation numbers, or its major compounds. Another thing is that it can predict earthquakes. Now I found that to be a bit odd. I thought to my self, now how can a gas, predict an earthquake? Oh well, I guess its for the better that I did not know. Bibliography Microsoft Encarta '99 KEYWORD:radon www.webelements.com