Abstract
Further to the 2020 review (1) no new platinum group elements isotopes were discovered between January 2020 and November 2023. However the previous optimistic suggestion by Zhang et al. (2) that they had discovered platinum isotopes of mass 209 to 212 is now considered to be incorrect as was proved by the absence of these isotopes in the 2020 NUBASE databases (3, 4). Evidence for the existence of the rhodium isotope of mass 89 is also highly tentative and strongly suggests that this isotope has not actually yet been discovered. It is therefore removed from Table I which gives the correct number of isotopes for each of these elements at the time of writing this update.
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