It's Elemental - Isotopes of the Element Gold

Isotopes of the Element Gold
[Click for Main Data]

Most of the isotope data on this site has been obtained from the National Nuclear Data Center. Please visit their site for more information.

Isotopes of the Element Gold with a Known Natural Abundance

Mass Number	Natural Abundance	Half-life

197	100%	Stable

All Known Isotopes of the Element Gold

Mass Number	Half-life	Decay Mode	Branching Percentage

171	17 microseconds	Proton Emission	100.00

171_m	1.02 milliseconds	Alpha Decay	54.00

		Proton Emission	46.00

172	6.3 milliseconds	Alpha Decay	<= 100.00

		Proton Emission	< 2.00

173	20 milliseconds	Alpha Decay	94.00

173_m	12 milliseconds	Alpha Decay	92.00

174	120 milliseconds	Alpha Decay	> 0.00

175	185 milliseconds	Alpha Decay	94.00

		Electron Capture	6.00

176	1.08 seconds	Alpha Decay	No Data Available

		Electron Capture	No Data Available

177	1.3 seconds	Electron Capture	>= 60.00

		Alpha Decay	<= 40.00

178	2.6 seconds	Electron Capture	<= 60.00

		Alpha Decay	>= 40.00

179	3.3 seconds	Electron Capture	78.00

		Alpha Decay	22.00

180	8.1 seconds	Electron Capture	<= 98.20

		Alpha Decay	>= 1.80

181	13.7 seconds	Electron Capture	97.30

		Alpha Decay	2.70

182	15.6 seconds	Electron Capture	99.87

		Alpha Decay	0.13

183	42.8 seconds	Electron Capture	99.45

		Alpha Decay	0.55

184	21 seconds	Electron Capture	100.00

184_m	48 seconds	Electron Capture	99.98

		Alpha Decay	0.02

		Isomeric Transition	No Data Available

185	4.25 minutes	Electron Capture	99.74

		Alpha Decay	0.26

185_m	6.8 minutes	Electron Capture	< 100.00

		Isomeric Transition	No Data Available

186	10.7 minutes	Electron Capture	100.00

		Alpha Decay	8.0E-4

187	8.4 minutes	Electron Capture	100.00

		Alpha Decay	3.0E-3

187_m	2.3 seconds	Isomeric Transition	100.00

188	8.84 minutes	Electron Capture	100.00

189	28.7 minutes	Electron Capture	100.00

		Alpha Decay	< 3.0E-5

189_m	4.59 minutes	Electron Capture	100.00

		Isomeric Transition	> 0.00

190	42.8 minutes	Electron Capture	100.00

		Alpha Decay	< 1.0E-6

190_m	125 milliseconds	Isomeric Transition	~ 100.00

		Electron Capture	No Data Available

191	3.18 hours	Electron Capture	100.00

191_m	0.92 seconds	Isomeric Transition	100.00

192	4.94 hours	Electron Capture	100.00

192_m	29 milliseconds	Isomeric Transition	100.00

192_m2	160 milliseconds	Isomeric Transition	100.00

193	17.65 hours	Electron Capture	100.00

193_m	3.9 seconds	Isomeric Transition	99.97

		Electron Capture	~ 0.03

194	38.02 hours	Electron Capture	100.00

194_m	600 milliseconds	Isomeric Transition	100.00

194_m2	420 milliseconds	Isomeric Transition	100.00

195	186.098 days	Electron Capture	100.00

195_m	30.5 seconds	Isomeric Transition	100.00

196	6.183 days	Electron Capture	92.80

		Beta-minus Decay	7.20

196_m	8.1 seconds	Isomeric Transition	100.00

196_m2	9.6 hours	Isomeric Transition	100.00

197	Stable	-	-

197_m	7.73 seconds	Isomeric Transition	100.00

198	2.69517 days	Beta-minus Decay	100.00

198_m	2.27 days	Isomeric Transition	100.00

199	3.139 days	Beta-minus Decay	100.00

200	48.4 minutes	Beta-minus Decay	100.00

200_m	18.7 hours	Beta-minus Decay	82.00

		Isomeric Transition	18.00

201	26 minutes	Beta-minus Decay	100.00

202	28.8 seconds	Beta-minus Decay	100.00

203	60 seconds	Beta-minus Decay	100.00

204	39.8 seconds	Beta-minus Decay	100.00

205	31 seconds	Beta-minus Decay	100.00

Isotopes of the Element Gold[Click for Main Data]

Isotopes of the Element Gold
[Click for Main Data]