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Periodic Table of Elements

Au - Gold

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Nuclides / Isotopes

Nuc- lide	Atomic Mass	NN	Abun %	Spin	Half Life	DM	DT	BR %	Decay Energy (MeV)
Au171		92	Syn
Au172	171.99	93	Syn		6.3ms	α	Ir168	<=100	7.100
					6.3ms	P	Pt171	<2	1.100
Au173	172.986	94	Syn		59ms	α	Ir169	<=100	6.900
Au174	173.985	95	Syn		120ms	α	Ir170	>0	6.782
Au175	174.982	96	Syn		200ms	α	Ir171	94	6.778
					200ms	ε	Pt175	6	8.800
Au176	175.98	97	Syn		1.08s	α	Ir172		6.542
					1.08s	ε	Pt176		10.500
Au177	176.977	98	Syn		1.18s	ε	Pt177	>=60	8.200
					1.18s	α	Ir173	<=40	6.427
Au178	177.976	99	Syn		2.6s	ε	Pt178	<=60	9.600
					2.6s	α	Ir174	>=40	6.120
Au179	178.973	100	Syn		7.1s	ε	Pt179	78	7.400
					7.1s	α	Ir175	22	6.082
Au180	179.972	101	Syn		8.1s	ε	Pt180	<=98.2	8.600
					8.1s	α	Ir176	>=1.8	5.850
Au181	180.97	102	Syn	5/2-	11.4s	ε	Pt181	98.5	6.300
					11.4s	α	Ir177	1.5	5.752
Au182	181.97	103	Syn		15.6s	ε	Pt182	99.87	7.800
					15.6s	α	Ir178	0.13	5.525
Au183	182.968	104	Syn	5/2-	42s	ε	Pt183	99.64	5.500
					42s	α	Ir179	0.36	5.470
Au184	183.967	105	Syn	3+	53s	ε	Pt184		7.100
meta state 0.000MeV			Syn	2+	53s	ε	Pt184	99.98	7.100
					53s	α	Ir180	0.02	5.300
					53s	IT	Au184		5.300
Au185	184.966	106	Syn	5/2-	4.25m	ε	Pt185	99.74	4.710
					4.25m	α	Ir181	0.26	5.180
meta state 0.000MeV			Syn		6.8m	ε	Pt185	<100	4.710
					6.8m	IT	Au185
Au186	185.966	107	Syn	3-	10.7m	ε	Pt186		6.040
Au187	186.965	108	Syn	1/2+	8.4m	α	Ir183	0.003	4.790
					8.4m	ε	Pt187		3.600
meta state 0.121MeV			Syn	9/2-	2.3s	IT			0.121
Au188	187.965	109	Syn	1-	8.84m	ε	Pt188		5.300
Au189	188.964	110	Syn	1/2+	28.7m	α	Ir185	<3.0E^-5	4.400
					28.7m	ε	Pt189		2.850
meta state 0.247MeV			Syn	11/2-	4.59m	IT	Au189	>0	0.247
					4.59m	ε	Pt189		3.097
Au190	189.9647	111	Syn	1-	42.8m	α	Ir186	<1.0E^-6	3.860
					42.8m	ε	Pt190		4.442
meta state 0.000MeV			Syn	11-	125ms	IT	Au190
Au191	190.9636	112	Syn	3/2+	3.18h	ε	Pt191		1.830
meta state 0.266MeV			Syn	11/2-	0.92s	IT			0.266
Au192	191.9648	113	Syn	1-	4.94h	ε	Pt192		3.516
meta state 0.000MeV			Syn	11-	160ms	IT	Au192
Au193	192.9641	114	Syn	3/2+	17.65h	ε	Pt193		1.069
meta state 0.290MeV			Syn	11/2-	3.9s	IT		99.97	0.290
					3.9s	ε	Pt193	~0.03	1.359
Au194	193.9653	115	Syn	1-	38.02h	ε	Pt194		2.492
meta state 0.107MeV			Syn	5+	600ms	IT			0.107
meta state 0.475MeV			Syn	11-	420ms	IT			0.476
Au195	194.965	116	Syn	3/2+	186.09d	ε	Pt195		0.227
meta state 0.319MeV			Syn	11/2-	30.5s	IT			0.319
Au196	195.9666	117	Syn	2-	6.183d	ε	Pt196	93.05	1.506
					6.183d	β^-	Hg196	6.95	0.686
meta state 0.084MeV			Syn	5+	8.1s	IT			0.085
meta state 0.595MeV			Syn	12-	9.6h	IT			0.596
Au197	196.9666	118	100.	3/2+	Stable
meta state 0.409MeV			Syn	11/2-	7.73s	IT			0.409
Au198	197.9682	119	Syn	2-	2.69517d	β^-	Hg198		1.372
meta state 0.812MeV			Syn	12-	2.27d	IT			0.812
Au199	198.9688	120	Syn	3/2+	3.139d	β^-	Hg199		0.453
meta state 0.549MeV			Syn	11/2-	0.44ms	IT			0.549
Au200	199.9707	121	Syn	1-	48.4m	β^-	Hg200		2.240
meta state 0.962MeV			Syn	12-	18.7h	β^-	Hg200	82	3.202
					18.7h	IT		18	0.962
Au201	200.9716	122	Syn	3/2+	26m	β^-	Hg201		1.257
Au202	201.974	123	Syn	1-	28.8s	β^-	Hg202		2.950
Au203	202.9751	124	Syn	3/2+	53s	β^-	Hg203		2.139
Au204	203.978	125	Syn	2-	39.8s	β^-	Hg204		3.800
Au205		126	Syn	3/2+	31s

Nuclide	Potential Parent Nuclides
Au171	None known
Au172	None known
Au173	None known
Au174	None known
Au175	Tl179 (Syn) Tl179m (Syn)
Au176	Tl180 (Syn)
Au177	Hg177 (Syn)
Au178	Hg178 (Syn) Tl182 (Syn)
Au179	Hg179 (Syn) Tl183m (Syn)
Au180	Hg180 (Syn) Tl184 (Syn)
Au181	Tl185m (Syn)
Au182	Hg182 (Syn) Tl186 (Syn)
Au183	Hg183 (Syn) Tl187 (Syn) Tl187m (Syn)
Au184	Au184m (Syn) Hg184 (Syn)
meta state 0.000MeV	None known
Au185	Au185m (Syn) Hg185 (Syn) Hg185m (Syn)
meta state 0.000MeV	None known
Au186	Hg186 (Syn)
Au187	Hg187 (Syn) Hg187m (Syn)
meta state 0.121MeV	None known
Au188	Hg188 (Syn)
Au189	Au189m (Syn) Hg189 (Syn) Hg189m (Syn)
meta state 0.247MeV	None known
Au190	Au190m (Syn) Hg190 (Syn) Tl194 (Syn)
meta state 0.000MeV	None known
Au191	Hg191 (Syn) Hg191m (Syn)
meta state 0.266MeV	None known
Au192	Au192m (Syn) Hg192 (Syn)
meta state 0.000MeV	None known
Au193	Hg193 (Syn) Hg193m (Syn)
meta state 0.290MeV	None known
Au194	Hg194 (Syn)
meta state 0.107MeV	None known
meta state 0.475MeV	None known
Au195	Hg195 (Syn) Hg195m (Syn)
meta state 0.319MeV	None known
Au196	None known
meta state 0.084MeV	None known
meta state 0.595MeV	None known
Au197	Hg197 (Syn) Hg197m (Syn) Pt197 (Syn) Pt197m (Syn)
meta state 0.409MeV	None known
Au198	None known
meta state 0.812MeV	None known
Au199	Pt199 (Syn)
meta state 0.549MeV	None known
Au200	Pt200 (Syn)
meta state 0.962MeV	None known
Au201	Pt201 (Syn)
Au202	None known
Au203	None known
Au204	None known
Au205	None known
Key: NN = Number of Neutrons Abun % = Natural Abundance (as a percentage) Syn = Synthetic Nuclide (does not occur in nature) DM = Decay Mode α = Alpha emission β^- = Beta emission β^- β^- = Double beta decay β⁺ = Positron emission ε = Electron Capture IT = Isomeric Transition N = Neutron emission P = Proton emission SF = Spontaneous Fission DT = Decays To BR % = Branch Ratio (as a percentage)

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Periodic Table of Elements

Au - Gold

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