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Periodic Table of Elements

Xe - Xenon

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Nuclides / Isotopes

Nuc- lide	Atomic Mass	NN	Abun %	Spin	Half Life	DM	DT	BR %	Decay Energy (MeV)
Xe110	109.944	56	Syn	0+	0.6us	α	Te106		3.886
Xe111	110.942	57	Syn		0.74s	α	Te107		3.720
					0.74s	ε	I111		10.600
Xe112	111.936	58	Syn	0+	2.7s	ε	I112	99.16	7.200
					2.7s	α	Te108	0.84	3.317
Xe113	112.9334	59	Syn		2.74s	ε	I113	99.97	9.060
					2.74s	ε + P	Te112	4.2	7.910
					2.74s	α	Te109	0.04	3.100
Xe114	113.928	60	Syn	0+	10s	ε	I114		5.900
Xe115	114.927	61	Syn	5/2+	18s	ε	I115		8.000
					18s	ε + P	Te114		6.200
Xe116	115.922	62	Syn	0+	59s	ε	I116		4.660
Xe117	116.921	63	Syn	5/2+	61s	ε + P	Te116	0.0029	4.020
					61s	ε	I117		6.440
Xe118	117.92	64	Syn	0+	3.8m	ε	I118		2.900
Xe119	118.916	65	Syn	5/2+	5.8m	ε	I119		5.000
Xe120	119.9122	66	Syn	0+	40m	ε	I120		1.960
Xe121	120.9114	67	Syn	5/2+	40.1m	ε	I121		3.730
Xe122	121.9085	68	Syn	0+	20.1h	ε	I122		0.890
Xe123	122.9085	69	Syn	1/2+	2.08h	ε
					2.08h	ε	I123		2.676
Xe124	123.9059	70	0.1	0+	Stable
Xe125	124.9064	71	Syn	1/2+	16.9h	ε	I125		1.652
meta state 0.253MeV			Syn	9/2-	57s	IT			0.253
Xe126	125.9043	72	0.09	0+	Stable
Xe127	126.9052	73	Syn	1/2+	36.4d	ε	I127		0.662
meta state 0.297MeV			Syn	9/2-	69.2s	IT			0.297
Xe128	127.9035	74	1.91	0+	Stable
Xe129	128.9048	75	26.4	1/2+	Stable
meta state 0.236MeV			Syn	11/2-	8.88d	IT			0.236
Xe130	129.9035	76	4.1	0+	Stable
Xe131	130.9051	77	21.2	3/2+	Stable
meta state 0.164MeV			Syn	11/2-	11.84d	IT			0.164
Xe132	131.9042	78	26.9	0+	Stable
meta state 2.752MeV			Syn	10+	8.39ms	IT			2.752
Xe133	132.9059	79	Syn	3/2+	5.243d	β^-	Cs133		0.427
meta state 0.233MeV			Syn	11/2-	2.19d	IT			0.233
Xe134	133.9054	80	10.4	0+	Stable
meta state 1.965MeV			Syn	7-	290ms	IT			1.965
Xe135	134.9072	81	Syn	3/2+	9.14h	β^-	Cs135		1.151
meta state 0.527MeV			Syn	11/2-	15.29m	β^-	Cs135	0	1.678
					15.29m	IT			0.527
Xe136	135.9072	82	8.9	0+	>2.36E²¹y	β^-	Ba136
Xe137	136.9116	83	Syn	7/2-	3.818m	β^-	Cs137		4.172
Xe138	137.914	84	Syn	0+	14.08m	β^-	Cs138		2.770
Xe139	138.9188	85	Syn	3/2-	39.68s	β^-	Cs139		5.057
Xe140	139.9216	86	Syn	0+	13.6s	β^-	Cs140		4.060
Xe141	140.9266	87	Syn	5/2-	1.73s	β^- + N	Cs140	0.04	0.670
					1.73s	β^-	Cs141		6.150
Xe142	141.93	88	Syn	0+	1.22s	β^- + N	Cs141	0.41	5.040
					1.22s	β^-	Cs142		5.040
Xe143	142.935	89	Syn	5/2-	0.3s	β^-	Cs143		7.310
Xe144	143.938	90	Syn	0+	1.15s	β^-	Cs144		6.100
Xe145	144.944	91	Syn		0.9s	β^-	Cs145
					0.9s	β^- + N	Cs144
Xe146	145.947	92	Syn	0+	>150ns
Xe147	146.953	93	Syn		>150ns

Nuclide	Potential Parent Nuclides
Xe110	Ba114 (Syn)
Xe111	None known
Xe112	Cs113 (Syn)
Xe113	None known
Xe114	Cs114 (Syn)
Xe115	Cs115 (Syn)
Xe116	Ba117 (Syn) Cs116 (Syn) Cs116m (Syn)
Xe117	Cs117 (Syn) Cs117m (Syn)
Xe118	Ba119 (Syn) Cs118 (Syn) Cs118m (Syn)
Xe119	Cs119 (Syn) Cs119m (Syn)
Xe120	Ba121 (Syn) Cs120 (Syn) Cs120m (Syn)
Xe121	Cs121 (Syn) Cs121m (Syn)
Xe122	Cs122 (Syn) Cs122m (Syn)
Xe123	Cs123 (Syn)
Xe124	Cs124 (Syn)
Xe125	Cs125 (Syn)
meta state 0.253MeV	None known
Xe126	Cs126 (Syn) I126 (Syn)
Xe127	Cs127 (Syn)
meta state 0.297MeV	None known
Xe128	Cs128 (Syn) I128 (Syn) Te128 (Natural)
Xe129	Cs129 (Syn) I129 (Syn)
meta state 0.236MeV	None known
Xe130	Cs130 (Syn) Cs130m (Syn) I130 (Syn) I130m (Syn) Te130 (Natural)
Xe131	Cs131 (Syn) I131 (Syn)
meta state 0.164MeV	None known
Xe132	Cs132 (Syn) I132 (Syn) I132m (Syn)
meta state 2.752MeV	None known
Xe133	I133 (Syn)
meta state 0.233MeV	None known
Xe134	Cs134 (Syn) I134 (Syn) I134m (Syn)
meta state 1.965MeV	None known
Xe135	I135 (Syn)
meta state 0.527MeV	None known
Xe136	I136 (Syn) I136m (Syn) I137 (Syn)
Xe137	I137 (Syn) I138 (Syn)
Xe138	I138 (Syn) I139 (Syn)
Xe139	I139 (Syn) I140 (Syn)
Xe140	I140 (Syn) I141 (Syn)
Xe141	I141 (Syn)
Xe142	I142 (Syn)
Xe143	None known
Xe144	None known
Xe145	None known
Xe146	None known
Xe147	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

Xe - Xenon

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