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Periodic Table of Elements

Ir - Iridium

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Nuclides / Isotopes

Nuc- lide	Atomic Mass	NN	Abun %	Spin	Half Life	DM	DT	BR %	Decay Energy (MeV)
Ir165		88	Syn	11/2-	300us
Ir166	165.986	89	Syn	2-	10.5ms	α	Re162	99	6.700
Ir167	166.982	90	Syn		>5ms	α	Re163	<=100	6.540
					>5ms	P	Os166		6.540
Ir168	167.98	91	Syn		161ms	α	Re164	<=100	6.410
Ir169	168.9764	92	Syn		0.4s	α	Re165	~100	6.280
					0.4s	ε	Os169		8.680
					0.4s	P	Os168		0.760
Ir170	169.975	93	Syn		1.05s	α	Re166	75	6.179
					1.05s	ε	Os170	25	10.680
Ir171	170.972	94	Syn		1.5s	α	Re167	~100	6.159
					1.5s	ε	Os171		8.200
					1.5s	P	Os170		0.390
Ir172	171.971	95	Syn	3+	4.4s	ε	Os172	98	9.800
					4.4s	α	Re168	~2	5.991
meta state 0.139MeV			Syn	7+	2s	ε	Os172	77	9.939
					2s	α	Re168	23	6.130
Ir173	172.968	96	Syn	2+, 5/2+	9s	ε	Os173	>93	7.400
meta state 0.000MeV			Syn	11/2-	2.2s	ε	Os173	88	7.400
					2.2s	α	Re169	12	5.840
Ir174	173.967	97	Syn	3+	9s	ε	Os174	99.6	9.000
					9s	α	Re170	0.4	5.624
meta state 0.193MeV			Syn	7+	4.9s	ε	Os174	97.48	9.193
					4.9s	α	Re170	00.52	5.817
Ir175	174.964	98	Syn	5/2-	9s	ε	Os175	99.15	6.600
					9s	α	Re171	0.85	5.620
Ir176	175.964	99	Syn		8s	ε	Os176	97.9	8.000
					8s	α	Re172	2.1	5.240
Ir177	176.961	100	Syn	5/2-	30s	ε	Os177	99.94	5.700
					30s	α	Re173	0.06	5.130
Ir178	177.961	101	Syn		12s	ε	Os178		7.200
Ir179	178.959	102	Syn	5/2-	79s	ε	Os179		4.900
Ir180	179.959	103	Syn		1.5m	ε	Os180		6.400
Ir181	180.958	104	Syn	5/2-	4.9m	ε	Os181		4.070
Ir182	181.958	105	Syn	5+	15m	ε	Os182		5.610
Ir183	182.957	106	Syn	5/2-	58m	ε	Os183		3.450
Ir184	183.957	107	Syn	5-	3.09h	ε	Os184		4.600
Ir185	184.957	108	Syn	5/2-	14.4h	ε	Os185		2.370
Ir186	185.958	109	Syn	5+	16.64h	ε	Os186		3.831
meta state 0.000MeV			Syn	2-	1.9h	ε	Os186	<=100	3.831
					1.9h	IT		>0
Ir187	186.9574	110	Syn	3/2+	10.5h	ε	Os187		1.502
meta state 0.186MeV			Syn	9/2-	30.3ms	IT	Ir187		0.186
Ir188	187.9589	111	Syn	1-	41.5h	ε	Os188		2.809
meta state 0.000MeV			Syn		4.2ms	IT	Ir188
Ir189	188.9587	112	Syn	3/2+	13.2d	ε	Os189		0.532
meta state 0.372MeV			Syn	11/2-	13.3ms	IT			0.372
meta state 2.333MeV			Syn	25/2+	3.7ms	IT			2.333
Ir190	189.961	113	Syn	4-	11.78d	ε	Os190	<0.002	2.000
meta state 0.026MeV			Syn	1-	1.2h	IT			0.026
meta state 0.148MeV			Syn	11-	3.25h	ε	Os190	94.4	2.149
					3.25h	IT		5.6	0.149
Ir191	190.9606	114	37.3	3.2+	Stable
meta state 0.171MeV			Syn	11.2-	4.94s	IT			0.171
meta state 2.047MeV			Syn		5.5s	IT			2.047
Ir192	191.9626	115	Syn	4+	73.831d	β^-	Pt192	95.24	1.460
					73.831d	ε	Os192	4.76	1.046
meta state 0.057MeV			Syn	1-	1.45m	IT		99.98	0.057
					1.45m	β^-	Pt192	0.02	1.517
meta state 0.155Mev			Syn	9	241y	IT			0.155
Ir193	192.9629	116	62.7	3/2+	Stable
meta state 0.080MeV			Syn	11/2-	10.53d	IT			0.080
Ir194	193.9651	117	Syn	1-	19.28h	β^-	Pt194
meta state 0.147MeV			Syn	4+	31.85ms	IT			0.147
meta state 0.190MeV			Syn	10, 11	171d	β^-	Pt194		2.437
Ir195	194.966	118	Syn	3/2+	2.5h	β^-	Pt195		1.120
meta state 0.100MeV			Syn	11/2-	3.8h	β^-	Pt195	95	1.220
					3.8h	IT		5	0.100
Ir196	195.9684	119	Syn	0-	52s	β^-	Pt196		3.210
meta state 0.410MeV			Syn	10, 11-	1.4h	β^-	Pt196	~1005	3.620
					1.4h	IT	Ir196	<0.3	0.410
Ir197	196.9696	120	Syn	3/2+	5.8m	β^-	Pt197		2.155
meta state 0.115MeV			Syn	11/2-	8.9m	β^-	Pt197	99.75	2.270
					8.9m	IT	Ir197	0.25	0.115
Ir198	197.972	121	Syn		8s	β^-	Pt198		4.100
Ir199		122	Syn

Nuclide	Potential Parent Nuclides
Ir165	None known
Ir166	None known
Ir167	None known
Ir168	Au172 (Syn)
Ir169	Au173 (Syn)
Ir170	Au174 (Syn)
Ir171	Au175 (Syn) Pt171 (Syn)
Ir172	Au176 (Syn) Pt172 (Syn)
meta state 0.139MeV	None known
Ir173	Au177 (Syn) Pt173 (Syn)
meta state 0.000MeV	None known
Ir174	Au178 (Syn) Pt174 (Syn)
meta state 0.193MeV	None known
Ir175	Au179 (Syn) Pt175 (Syn)
Ir176	Au180 (Syn) Pt176 (Syn)
Ir177	Au181 (Syn) Pt177 (Syn)
Ir178	Au182 (Syn) Pt178 (Syn)
Ir179	Au183 (Syn) Pt179 (Syn)
Ir180	Au184m (Syn) Pt180 (Syn)
Ir181	Au185 (Syn) Pt181 (Syn)
Ir182	Pt182 (Syn)
Ir183	Au187 (Syn) Pt183 (Syn) Pt183m (Syn)
Ir184	Pt184 (Syn)
Ir185	Au189 (Syn) Pt185 (Syn) Pt185m (Syn)
Ir186	Au190 (Syn) Pt186 (Syn)
meta state 0.000MeV	None known
Ir187	Ir187m (Syn) Pt187 (Syn)
meta state 0.186MeV	None known
Ir188	Ir188m (Syn) Pt188 (Syn)
meta state 0.000MeV	None known
Ir189	Pt189 (Syn)
meta state 0.372MeV	None known
meta state 2.333MeV	None known
Ir190	None known
meta state 0.026MeV	None known
meta state 0.148MeV	None known
Ir191	Pt191 (Syn)
meta state 0.171MeV	None known
meta state 2.047MeV	None known
Ir192	None known
meta state 0.057MeV	None known
meta state 0.155Mev	None known
Ir193	Os193 (Syn) Pt193 (Syn)
meta state 0.080MeV	None known
Ir194	Os194 (Syn)
meta state 0.147MeV	None known
meta state 0.190MeV	None known
Ir195	Os195 (Syn)
meta state 0.100MeV	None known
Ir196	Ir196m (Syn) Os196 (Syn)
meta state 0.410MeV	None known
Ir197	Ir197m (Syn)
meta state 0.115MeV	None known
Ir198	None known
Ir199	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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References

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Periodic Table of Elements

Ir - Iridium

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Nuclides / Isotopes

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