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Note
isomer
m
( ) uncertainty (1σ)
unc()
^ ( ) – Uncertainty (1σ ) is given in concise form in parentheses after the corresponding last digits.
[ ] variation interval
var[]
^ [ ] – Range of variance in natural abundance
IUPAC[ 1]
# derived value (TMS)
mass#
^ # – Atomic mass marked #: value and uncertainty derived not from purely experimental data, but at least partly from trends from the Mass Surface (TMS).
TMS[ 2]
stability
hl-nst
# derived value (TNN)
hl#, spin#, exen#
^ a b c # – Values marked # are not purely derived from experimental data, but at least partly from trends of neighboring nuclides (TNN).
TNN[ 3]
modes of decay
CD, EC, SF, IT, n, p
stability
daughter-st
^ Bold symbol as daughter – Daughter product is stable.
stability
daughter-nst
^ Bold italics symbol as daughter – Daughter product is nearly stable.
( ) in spin
spin()
^ ( ) spin value – Indicates spin with weak assignment arguments.
* Texts are maintained in {{ Isotopes table/ref_group }}
^ Meija, Juris; Coplen, Tyler B.; et al. (2016). "Isotopic compositions of the elements 2013 (IUPAC Technical Report)" (PDF) . Pure and Applied Chemistry . 88 (3). doi :10.1515/pac-2015-0503 .
^ TMS: trends from the Mass Surface. Marked # in atomic mass: value and uncertainty derived not from purely experimental data, but at least partly from TMS ({{ AME2020 I }} )
^ TNN: trends of neighboring nuclides. Marked # in excitation energy, halflife, spin & parity: {{ NUBASE2020 }} . Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF) . Chinese Physics C . 45 (3): 030001. doi :10.1088/1674-1137/abddae .