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20 answers for: The second isotope of hydrogen (9)
RANKANSWERCLUE
DEUTERIUMThe second isotope of hydrogen (9)
AMENDMENTChaps repeatedly separating atomic isotopes of hydrogen, for a change
TRITIUMRadioactive isotope of hydrogen produced in nuclear reactors by neutron activation of lithium-6; from Greek, 'third' (7)
PROTIUMCommon isotope of hydrogen
CARBONDATINGMethod to find the age of organic matter using the radioactive isotope of a common element, developed by 1960 Nobel winner Willard Libby (6,6)
COMPOSITEIt is a compound of a carbon isotope, Master (9)
PLUTONIUMMetallic element whose isotope 244 has a half-life of 80 million years (9)
STRONTIUMSet to have yellow metal isotope (5-9)
ACTINONIsotope of radon
OZONEAn isotope of oxygen? (5)
THORONIsotope of radon
IONIUMIsotope of thorium
RADIUMSIsotopes of element #88
SODDYChemist who developed the theory of isotopes and assisted William Ramsay in the discovery of helium (5)
ASTONFellow of the Royal Society whose identification of 212 isotopes by means of his mass spectrograph earned him a Nobel Prize (5)
HBOMBNuclear weapon incorporating the fusion of hydrogen isotopes (1-4)
THORIUMRadioactive metal of the actinide series whose isotope 232 is used as a nuclear power source; atomic no. 90 (7)
HALFLIFETime of isotope decay
RADIOTELESCOPEDeclare isotope 'unstable' in big dish, say (5,9)
DEPOSITORYStore form of isotope in desert