Question- Which seven isotopes are most likely to be used in radiological dispersal devices (RDDs) (dirty bombs)?
Answer- The following seven isotopes are thought to be the most likely potential isotopes used in RDDs: Americium-241; Californium- 252; Cesium-137; Cobalt-60; Iridium-192; Plutonium-238; Polonium-210; Radium-226 and Strontium-90. (https://www.remm.nlm.gov/rdd.htm#isotopes; accessed February, 2018)
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