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Periodic Table of Elements

Y - Yttrium

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Nuclides / Isotopes

Nuc- lide	Atomic Mass	NN	Abun %	Spin	Half Life	DM	DT	BR %	Decay Energy (MeV)
Y77	76.95	38	Syn			ε	Sr77		11.000
						ε + P	Rb76		6.300
Y78	77.944	39	Syn		>150ns
Y79	78.937	40	Syn	5/2+	14.8s	ε	Sr79		7.100
					14.8s	ε + P	Rb78		1.300
Y80	79.934	41	Syn	3, 4, 5	35s	ε	Sr80		9.100
Y81	80.9291	42	Syn	5/2+	70.4s	ε	Sr81		5.510
Y82	81.927	43	Syn	1+	9.5s	ε	Sr82		7.820
Y83	82.9224	44	Syn	9/2+	7.08m	ε	Sr83		4.470
meta state 0.062MeV			Syn	3/2-	2.85m	ε	Sr83	60	4.532
					2.85m	IT	Y83	40	0.062
Y84	83.9204	45	Syn	1+	4.6s	ε	Sr84		6.490
meta state 0.000MeV			Syn	5-	39.5m	ε	Sr84		6.490
Y85	84.9164	46	Syn	1/2-	2.68h	ε	Sr85		3.250
meta state 0.020MeV			Syn	9/2+	4.86h	IT	Y85	<0.002	0.020
					4.86h	ε	Sr85		3.270
Y86	85.9149	47	Syn	4-	14.74h	ε	Sr86		5.240
meta state 0.218MeV			Syn	8+	48m	IT		99.31	0.218
					48m	ε	Sr86	0.7	5.458
Y87	86.9109	48	Syn	1/2-	79.8h	ε	Sr87		1.862
meta state 0.380MeV			Syn	9/2+	13.37h	IT		98.43	0.381
					13.37h	ε	Sr87	1.57	2.243
Y88	87.9095	49	Syn	4-	106.65d	ε	Sr88		3.623
meta state			Syn	8+	13.9ms	IT
Y89	88.9059	50	100.	1/2-	Stable
meta state 0.909MeV			Syn	9/2+	16.06s	IT			0.909
Y90	89.9072	51	Syn	2-	64h	β^-	Zr90		2.282
meta state 0.682MeV			Syn	7+	3.19h	β^-	Zr90	0.0018	2.964
					3.19h	IT			0.682
Y91	90.907	52	Syn	0.5	58.51d	β^-
meta state 91.			Syn	9/2+	49.71m	IT
Y92	91.9089	53	Syn	2-	3.54h	β^-	Zr92		3.639
Y93	92.9096	54	Syn	1/2-	10.18h	β^-	Zr93		2.893
meta state 0.758MeV			Syn	7/2+	0.82s	IT			0.759
Y94	93.9116	55	Syn	2-	18.7m	β^-	Zr94		4.919
Y95	94.9128	56	Syn	1/2-	10.3m	β^-	Zr95		4.420
Y96	95.9159	57	Syn	0-	5.34s	β^-	Zr96		7.087
meta state 0.000MeV			Syn	8+	9.6s	β^-	Zr96		7.087
Y97	96.9181	58	Syn	1/2-	3.75s	β^- + N	Zr96	0.05	1.108
					3.75s	β^-	Zr97		6.688
meta state 0.668MeV			Syn	9/2+	1.17s	β^-	Zr97	>99.3	7.356
					1.17s	IT		<0.7	0.668
					1.17s	β^- + N	Zr96	<0.08	1.776
meta state 3.523MeV			Syn	27/2-	142ms	IT		>80	3.523
					142ms	β^-	Zr97	<20	10.211
Y98	97.9222	59	Syn	0-	0.548s	β^- + N	Zr97	0.33	2.443
					0.548s	β^-	Zr98		8.830
meta state 0.000MeV			Syn	4, 5	2s	β^-	Zr98	90	8.830
					2s	IT	Y98	<20
					2s	β^- + N	Zr97	3.4	2.443
Y99	98.9246	60	Syn	5/2+	1.470s	β^- + N	Zr98	1.9	2.990
					1.470s	β^-	Zr99		7.567
Y100	99.9278	61	Syn	1-, 2-	735ms	β^- + N	Zr99	0.92	2.400
					735ms	β^-	Zr100		9.310
meta state 0.000MeV			Syn	3, 4, 5	0.94s	β^-	Zr100		9.310
Y101	100.93	62	Syn	5/2+	0.45s	β^- + N	Zr100	1.94	3.620
					0.45s	β^-	Zr101		8.550
Y102	101.9336	63	Syn	low	0.36s	β^-	Zr102		9.850
meta state 0.000MeV			Syn	high	0.3s	β^-	Zr102		9.850
Y103	102.937	64	Syn	5/2+	0.23s	β^- + N	Zr102	8	4.900
					0.23s	β^-	Zr103		9.600
Y104	103.941	65	Syn		>150ns	β^-	Zr104		11.800
Y105	104.945	66	Syn		>150ns
Y106	105.95	67	Syn

Nuclide	Potential Parent Nuclides
Y77	None known
Y78	None known
Y79	None known
Y80	None known
Y81	Zr81 (Syn)
Y82	Zr82 (Syn)
Y83	Nb84 (Syn) Y83m (Syn) Zr83 (Syn)
meta state 0.062MeV	None known
Y84	None known
meta state 0.000MeV	None known
Y85	Y85m (Syn) Zr85 (Syn) Zr85m (Syn)
meta state 0.020MeV	None known
Y86	Zr86 (Syn)
meta state 0.218MeV	None known
Y87	Zr87 (Syn)
meta state 0.380MeV	None known
Y88	Zr88 (Syn)
meta state	None known
Y89	Sr89 (Syn) Zr89 (Syn) Zr89m (Syn)
meta state 0.909MeV	None known
Y90	Sr90 (Syn)
meta state 0.682MeV	None known
Y91	Sr91 (Syn)
meta state 91.	None known
Y92	Sr92 (Syn)
Y93	Sr93 (Syn)
meta state 0.758MeV	None known
Y94	Sr94 (Syn)
Y95	Sr95 (Syn)
Y96	Sr96 (Syn) Sr97 (Syn)
meta state 0.000MeV	None known
Y97	Sr97 (Syn) Sr98 (Syn)
meta state 0.668MeV	None known
meta state 3.523MeV	None known
Y98	Sr98 (Syn) Sr99 (Syn) Y98m (Syn)
meta state 0.000MeV	None known
Y99	Sr100 (Syn) Sr99 (Syn)
Y100	Sr100 (Syn) Sr101 (Syn)
meta state 0.000MeV	None known
Y101	Sr101 (Syn) Sr102 (Syn)
Y102	Sr102 (Syn)
meta state 0.000MeV	None known
Y103	None known
Y104	None known
Y105	None known
Y106	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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