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20 answers for: Unstable element (13)
RANKANSWERCLUE
RUTHERFORDIUMUnstable element
CALIFORNIUMUnstable element
FRANCIUMUnstable element
RADONAcademy lecturer has unstable element
URANIUMA rum uni turns out an unstable element
MENDELEVIUMUnstable element in short making the case for Mossad?
RADIUMUnstable element so long emitting energy in empty room
EINSTEINIUMOne of the unstable elements named after Nobel prize winners
TEMPERAMENTALMeant palm tree replanted when unstable (13)
UNGENTLEMANLYBoorish nun, eg, mentally unstable (13)
IRRESPONSIBLEUnstable
UNPREDICTABLEUnstable
CONTRADICTORYUnstable
UNTRUSTWORTHYUnstable
RADIOISOTOPESThey have an unstable nucleus
ALPHAPARTICLEHelium nucleus emitted by unstable isotopes
XENONTRIOXIDEUnstable inert gas compound
THECANTERBURY,14 21 work of treachery and unstable characters about Troy (3,10)
AGAINANDAGAINHeart essentially clear after plug controls unstable angina repeatedly (5,3,5)
RADIOACTIVITYPhenomenon whereby unstable atoms release energy, first discovered by Henri Becquerel