inert radioactive gaseous element produced by the decay of radium
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radonsinert radioactive gaseous element produced by the decay of radium
radoninert radioactive gaseous element produced by the decay of radium
radona heavy radioactive gaseous element formed by the decay of radium see element table
uraninitemineral, probably originally uranium dioxide, UO2, but altered by radioactive decay, and usually containing uranium trioxide, lead, radium, and helium, occurring in several varieties, including pitchblende: the most important ore of uranium
curiesunit of activity of radioactive substances equivalent to 3.70 x 1010 disintegrations per second: it is approximately the amount of activity produced by 1 g of radium-226
cisunit of activity of radioactive substances equivalent to 3.70 x 1010 disintegrations per second: it is approximately the amount of activity produced by 1 g of radium-226
curieunit of activity of radioactive substances equivalent to 3.70 x 1010 disintegrations per second: it is approximately the amount of activity produced by 1 g of radium-226