"SDN:P07::CF12N176" . "false" . . "SDN:P07::CF12N176" . "2009-07-06 15:41:29.0" . . . "1" . "The construction \"atmosphere_moles_of_X\" means the total number of moles of X in the entire atmosphere, i.e. summed over the atmospheric column and over the entire globe. The chemical symbol for radon is Rn."@en . "1" . "2009-07-06 15:41:29.0" . "atmosphere_moles_of_radon"@en . . "SDN:P07::CF12N176" . "" . . "accepted"@en . .