229mTh

GPTKB entity

Statements (15)
Predicate Object
gptkbp:instanceOf nuclear isomer
gptkbp:canBe nuclear clock
gptkbp:containsElement thorium
gptkbp:decaysTo thorium-229 ground state
gptkbp:discoveredBy 1976
gptkbp:excitationEnergy ~8.28 eV
gptkbp:halfLife minutes to hours (uncertain, depends on decay mode)
https://www.w3.org/2000/01/rdf-schema#label 229mTh
gptkbp:isomerOf gptkb:thorium-229
gptkbp:massNumber 229
gptkbp:mode gamma emission
gptkbp:notableFor lowest known nuclear excitation energy
gptkbp:symbol gptkb:229mTh
gptkbp:bfsParent gptkb:thorium-229m
gptkbp:bfsLayer 7