Table 1.

Some radioactive properties of ¹⁹⁸Au and ¹⁹⁹Au.

Property	198Au	199Au
Radiological half-life	64.6842 h	75.33 h
R. mean lifetime	93.3194 h	108.7 h
R. decay constant	2.97663 s−1	2.556 s−1
Specific activity	9.05484 PBq g−1	7.735 PBq g−1
Emax of β	0.96 MeV	0.294 MeV
E of γ	0.41 MeV	0.1584 MeV
Stable product	198Hg	199Hg