radioactive isotope of radon produced by the disintegration of thorium Symbol Tn at wt 220 at no 86
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thoronsradioactive isotope of radon, produced by the disintegration of thorium. Symbol: Tn; at. wt.: 220; at. no.: 86
thoronradioactive isotope of radon, produced by the disintegration of thorium. Symbol: Tn; at. wt.: 220; at. no.: 86
actinonchemically inert, gaseous, short-lived isotope of radon that is a member of the actinium series. Symbol: An; at. no.: 86; at. wt.: 219
actinonschemically inert, gaseous, short-lived isotope of radon that is a member of the actinium series. Symbol: An; at. no.: 86; at. wt.: 219
ioniumsnaturally occurring radioactive isotope of thorium. Symbol: Io; at. no.: 90; at. wt.: 230
ioniumnaturally occurring radioactive isotope of thorium. Symbol: Io; at. no.: 90; at. wt.: 230