– noting also the primordial radionuclide 87Rb) and 82 (six: 138Ba, 139La, 140Ce, 141Pr, 142Nd, 144Sm – noting also the primordial radionuclide 136Xe)...
5 KB (606 words) - 15:27, 2 June 2024
ionization chambers of most modern smoke detectors. Of the actinides, primordial thorium and uranium occur naturally in substantial quantities. The radioactive...
130 KB (11,597 words) - 10:51, 3 September 2024