https://doi.org/10.1351/goldbook.08735
Chemical element having only one stable nuclide.
Notes:
- There are 26 elements that follow the definition: \(\ce{^{9}Be}\), \(\ce{^{19}F}\), \(\ce{^{23}Na}\), \(\ce{^{27}Al}\), \(\ce{^{31}P}\), \(\ce{^{45}Sc}\), \(\ce{^{51}V}\), \(\ce{^{55}Mn}\), \(\ce{^{59}Co}\), \(\ce{^{75}As}\), \(\ce{^{85}Rb}\), \(\ce{^{89}Y}\), \(\ce{^{93}Nb}\), \(\ce{^{103}Rh}\), \(\ce{^{113}In}\), \(\ce{^{127}I}\), \(\ce{^{133}Cs}\), \(\ce{^{139}La}\), \(\ce{^{141}Pr}\), \(\ce{^{153}Eu}\), \(\ce{^{159}Tb}\), \(\ce{^{165}Ho}\), \(\ce{^{169}Tm}\), \(\ce{^{175}Lu}\), \(\ce{^{185}Re}\), \(\ce{^{197}Au}\).
- General usage of the term 'monoisotopic' refers to the 21 elements with one isotope determining their relative atomic masses, i.e. \(\ce{^{9}Be}\), \(\ce{^{19}F}\), \(\ce{^{23}Na}\), \(\ce{^{27}Al}\), \(\ce{^{31}P}\), \(\ce{^{45}Sc}\), \(\ce{^{55}Mn}\), \(\ce{^{59}Co}\), \(\ce{^{75}As}\), \(\ce{^{89}Y}\), \(\ce{^{93}Nb}\), \(\ce{^{103}Rh}\), \(\ce{^{127}I}\), \(\ce{^{133}Cs}\), \(\ce{^{141}Pr}\), \(\ce{^{159}Tb}\), \(\ce{^{165}Ho}\), \(\ce{^{169}Tm}\), \(\ce{^{197}Au}\), \(\ce{^{209}Bi}\), \(\ce{^{231}Pa}\).