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Periodic Table of Elements

Os - Osmium

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Nuc- lide	Atomic Mass	NN	Abun %	Spin	Half Life	DM	DT	BR %	Decay Energy (MeV)
Os162	161.984	86	Syn	0+	1.9ms	α	W158		6.780
Os163	162.982	87	Syn			ε	Re163	<=100	9.400
						α	W159	>=0	6.670
Os164	163.978	88	Syn	0+	21ms	α	W160	~98	6.478
					21ms	ε	Re164	~2	6.990
Os165	164.976	89	Syn	7/2-	71ms	α	W161	>60	6.320
					71ms	ε	Re165	<40	8.800
Os166	165.973	90	Syn	0+	181ms	α	W162	72	6.131
					181ms	ε	Re166	18	6.260
Os167	166.972	91	Syn		0.83s	α	W163	67	5.980
					0.83s	ε	Re167	33	8.200
Os168	167.9678	92	Syn	0+	2.1s	ε	Re168	51	5.700
					2.1s	α	W164	49	5.819
Os169	168.9671	93	Syn		3.4s	ε	Re169	89	7.680
					3.4s	α	W165	11	5.720
Os170	169.9636	94	Syn	0+	7.3s	ε	Re170	88	5.000
					7.3s	α	W166	12	5.539
Os171	170.963	95	Syn	5/2-	8s	ε	Re171	98.3	7.100
					8s	α	W167	1.7	5.370
Os172	171.96	96	Syn	0+	19.2s	ε	Re172	99.8	4.500
					19.2s	α	W168	0.2	5.227
Os173	172.96	97	Syn	5/2-	16s	ε	Re173	99.98	6.300
					16s	α	W169	0.02	5.060
Os174	173.957	98	Syn	0+	44s	ε	Re174	99.98	3.700
					44s	α	W170	0.02	4.872
Os175	174.957	99	Syn	5/2-	1.4m	ε	Re175		5.300
Os176	175.955	100	Syn	0+	3.6m	ε	Re176		3.200
Os177	176.955	101	Syn	1/2-	2.8m	ε	Re177		4.500
Os178	177.953	102	Syn	0+	5m	ε	Re178		2.300
Os179	178.954	103	Syn	1/2-	6.5m	ε	Re179		3.680
Os180	179.952	104	Syn	0+	21.5m	ε	Re180		1.470
Os181	180.953	105	Syn	1/2-	105m	ε	Re181		2.930
meta state 0.049MeV			Syn	7/2-	2.7m	ε	Re181		2.979
Os182	181.9522	106	Syn	0+	22.1h	ε	Re182		0.910
Os183	182.953	107	Syn	9/2+	13h	ε	Re183		2.130
meta state 0.171MeV			Syn	1/2-	9.9h	ε	Re183	85	2.301
					9.9h	IT		15	0.171
Os184	183.9525	108	0.02	0+	>5.6E¹³y
Os185	184.954	109	Syn	1/2-	93.6d	ε	Re185		1.013
Os186	185.9538	110	1.58	0+	2.0E¹⁵y	α	W182		2.822
Os187	186.9558	111	1.6	1/2-	Stable
Os188	187.9558	112	13.3	0+	Stable
Os189	188.9581	113	16.1	3/2-	Stable
meta state 0.031MeV				9/2-	5.8h	IT			0.031
Os190	189.9585	114	26.4	0+	Stable
meta state 1.705MeV				10-	9.9m	IT			1.705
Os191	190.9609	115	Syn	9/2-	15.4d	β^-	Ir191m		0.314
meta state 0.074MeV			Syn	3/2-	13.1h	IT			0.074
Os192	191.9615	116	41.	0+	Stable
meta state 2.015MeV				10-	5.9s	IT		>87	2.015
					5.9s	β^-	Ir-192	<13	0.969
Os193	192.9642	117	Syn	3/2-	30.11h	β^-	Ir193		1.140
Os194	193.9652	118	Syn	0+	6y	β^-	Ir194		0.097
Os195	194.968	119	Syn		6.5m	β^-	Ir195		2.000
Os196	195.9696	120	Syn	0+	34.9m	β^-	Ir196		1.160

Nuclide	Potential Parent Nuclides
Os162	None known
Os163	None known
Os164	Pt168 (Syn)
Os165	Pt169 (Syn)
Os166	Ir167 (Syn) Pt170 (Syn)
Os167	Pt171 (Syn)
Os168	Ir169 (Syn) Pt172 (Syn)
Os169	Ir169 (Syn) Pt173 (Syn)
Os170	Ir170 (Syn) Ir171 (Syn) Pt174 (Syn)
Os171	Ir171 (Syn) Pt175 (Syn)
Os172	Ir172 (Syn) Ir172m (Syn) Pt176 (Syn)
Os173	Ir173 (Syn) Ir173m (Syn) Pt177 (Syn)
Os174	Ir174 (Syn) Ir174m (Syn) Pt178 (Syn)
Os175	Ir175 (Syn) Pt179 (Syn)
Os176	Ir176 (Syn) Pt180 (Syn)
Os177	Ir177 (Syn) Pt181 (Syn)
Os178	Ir178 (Syn) Pt182 (Syn)
Os179	Ir179 (Syn) Pt183 (Syn) Pt183m (Syn)
Os180	Ir180 (Syn) Pt184 (Syn)
Os181	Ir181 (Syn) Pt185 (Syn) Pt185m (Syn)
meta state 0.049MeV	None known
Os182	Ir182 (Syn) Pt186 (Syn)
Os183	Ir183 (Syn)
meta state 0.171MeV	None known
Os184	Ir184 (Syn) Pt188 (Syn)
Os185	Ir185 (Syn)
Os186	Ir186 (Syn) Ir186m (Syn) Pt190 (Natural) Re186 (Syn) Re186m (Syn)
Os187	Ir187 (Syn) Re187 (Natural)
Os188	Ir188 (Syn) Re188 (Syn)
Os189	Ir189 (Syn) Re189 (Syn)
meta state 0.031MeV	None known
Os190	Ir190 (Syn) Ir190m1 (Syn) Re190 (Syn) Re190m (Syn)
meta state 1.705MeV	None known
Os191	Re191 (Syn)
meta state 0.074MeV	None known
Os192	Ir192 (Syn) Re192 (Syn)
meta state 2.015MeV	None known
Os193	None known
Os194	None known
Os195	None known
Os196	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

Os - Osmium

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