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Periodic Table of Elements

Lu - Lutetium

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Nuclides / Isotopes

Nuc- lide	Atomic Mass	NN	Abun %	Spin	Half Life	DM	DT	BR %	Decay Energy (MeV)
Lu150	149.973	79	Syn		35ms	P	Yb149	80	1.270
Lu151	150.967	80	Syn	11/2-	88ms	P	Yb150	70	1.240
Lu152	151.964	81	Syn	5-, 6-	0.7s	ε + P	Tm151	15	9.600
					0.7s	ε	Yb152		12.500
Lu153	152.959	82	Syn	11/2-	0.9s	P	Yb152		0.700
Lu154	153.957	83	Syn	2-		ε	Yb154	~100	10.100
meta state 2.561MeV			Syn	17+	35us	IT			2.562
Lu155	154.954	84	Syn	2+, 3/2+	140ms	α	Tm151
					140ms	ε	Yb155
meta state 0.021MeV			Syn	11/2-	68ms	α	Tm151	79	5.791
					68ms	ε	Yb155	21	7.991
meta state 1.798MeV			Syn	25/2-	2.6ms	α	Tm151	~100	7.568
Lu156	155.953	85	Syn	9+	198ms	α	Tm152	~95	5.590
					198ms	ε	Yb156	<=25	9.400
Lu157	156.9501	86	Syn	2+, 3/2+	6.8s	α	Tm153	>0	5.096
meta state 0.026MeV			Syn	11/2-	4.79s	ε	Yb157	94	6.956
					4.79s	α	Tm153	6	5.122
Lu158	157.949	87	Syn		10.6s	ε	Yb158	99.09	8.670
					10.6s	α	Tm154	0.91	4.790
Lu159	158.9466	88	Syn		12.1s	α	Tm155	0.04	4.530
					12.1s	ε	Yb159		5.990
Lu160	159.946	89	Syn		36.1s	ε	Yb160	<=100	7.880
					36.1s	α	Tm156		4.110
Lu161	160.944	90	Syn	5/2+	77s	ε	Yb161		5.300
meta state 0.136MeV			Syn	9/2-	7.3ms	IT			0.136
Lu162	161.943	91	Syn	1-	1.37m	ε	Yb162		6.960
meta state 0.000MeV			Syn	4-	1.5m	ε	Yb162	<=100	6.960
Lu163	162.941	92	Syn	1/2-	238s	ε	Yb163	<=100	4.600
Lu164	163.941	93	Syn		3.14m	ε	Yb164		6.250
Lu165	164.9396	94	Syn	7/2+	10.74m	ε	Yb165		3.920
meta state 0.000MeV			Syn	1/2+	12m
Lu166	165.94	95	Syn	6-	2.65m	ε	Yb166		5.480
meta state 0.034MeV			Syn	3-	1.41m	ε	Yb166	58	5.514
					1.41m	IT		42	0.034
meta state 0.043MeV			Syn	0-	2.12m	ε	Yb166	>80	5.523
					2.12m	IT		<20	0.043
Lu167	166.938	96	Syn	7/2+	51.5m	ε	Yb167		3.130
Lu168	167.9387	97	Syn	6-	5.5m	ε	Yb168		4.480
meta state 0.220MeV			Syn	3+	6.7m	ε	Yb168	>95	4.700
					6.7m	IT	Lu168	<5	0.220
Lu169	168.9377	98	Syn	7/2+	34.06h	ε	Yb169		2.293
meta state 0.029MeV			Syn	1/2-	160s	IT			0.029
Lu170	169.9385	99	Syn	0+	2.012d	ε	Yb170		3.459
meta state 0.092MeV			Syn	4-	0.67s	IT			0.093
Lu171	170.9379	100	Syn	7/2+	8.24d	ε	Yb171		1.479
meta state 0.071MeV			Syn	1/2-	79s	IT			0.071
Lu172	171.9391	101	Syn	4-	6.70d	ε	Yb172		2.519
meta state 0.042MeV			Syn	1-	3.7m	IT			0.042
Lu173	172.9389	102	Syn	7/2+	1.37y	ε	Yb173		0.671
Lu174	173.9403	103	Syn	1-	3.31y	ε	Yb174		1.374
meta state 0.170MeV			Syn	6-	142d	IT		99.38	0.171
					142d	ε	Yb174	0.62	1.545
Lu175	174.9408	104	97.41	7/2+	Stable
Lu176	175.9427	105	2.59	7-	3.78E¹⁰y	β^-	Hf176		1.193
meta state 0.123MeV			Syn	1-	3.635h	β^-	Hf176	99.91	1.316
					3.635h	ε	Yb176	0.1	0.229
Lu177	176.9438	106	Syn	7/2+	6.734d	β^-	Hf177		0.498
meta state 0.970MeV			Syn	23/2-	160.4d	β^-	Hf177	78.3	1.468
					160.4d	IT		21.7	0.970
Lu178	177.946	107	Syn	1+	28.4m	β^-	Hf178		2.099
meta state 0.120MeV			Syn	9-	23.1m	β^-	Hf178		2.219
Lu179	178.9473	108	Syn	7/2+	4.59h	β^-	Hf179		1.405
meta state 0.592MeV			Syn	1/2+	3.1ms	IT	Lu179		0.592
Lu180	179.9499	109	Syn	5+	5.7m	β^-	Hf180		3.100
Lu181	180.952	110	Syn	7/2+	3.5m	β^-	Hf181		2.500
Lu182	181.955	111	Syn	0, 1, 2	2m	β^-	Hf182
Lu183	182.958	112	Syn	7/2+	58s	β^-	Hf183
Lu184	183.961	113	Syn	2+	20s	β^-	Hf184
meta state 0.000MeV			Syn	low		β^-	Hf184

Nuclide	Potential Parent Nuclides
Lu150	None known
Lu151	None known
Lu152	None known
Lu153	Ta157 (Syn)
Lu154	Hf154 (Syn) Ta158 (Syn)
meta state 2.561MeV	None known
Lu155	Hf155 (Syn) Ta159 (Syn)
meta state 0.021MeV	None known
meta state 1.798MeV	None known
Lu156	Ta160 (Syn)
Lu157	Hf157 (Syn) Ta161 (Syn)
meta state 0.026MeV	None known
Lu158	Hf158 (Syn) Ta162 (Syn)
Lu159	Hf159 (Syn) Ta163 (Syn)
Lu160	Hf160 (Syn)
Lu161	Hf161 (Syn)
meta state 0.136MeV	None known
Lu162	Hf162 (Syn)
meta state 0.000MeV	None known
Lu163	Hf163 (Syn)
Lu164	Hf164 (Syn)
Lu165	Hf165 (Syn)
meta state 0.000MeV	None known
Lu166	Hf166 (Syn)
meta state 0.034MeV	None known
meta state 0.043MeV	None known
Lu167	Hf167 (Syn)
Lu168	Hf168 (Syn) Lu168m (Syn)
meta state 0.220MeV	None known
Lu169	Hf169 (Syn)
meta state 0.029MeV	None known
Lu170	Hf170 (Syn)
meta state 0.092MeV	None known
Lu171	Hf171 (Syn)
meta state 0.071MeV	None known
Lu172	Hf172 (Syn)
meta state 0.042MeV	None known
Lu173	Hf173 (Syn)
Lu174	None known
meta state 0.170MeV	None known
Lu175	Hf175 (Syn) Yb175 (Syn)
Lu176	Yb176m (Syn)
meta state 0.123MeV	None known
Lu177	Yb177 (Syn)
meta state 0.970MeV	None known
Lu178	Yb178 (Syn)
meta state 0.120MeV	None known
Lu179	Lu179m (Syn) Yb179 (Syn)
meta state 0.592MeV	None known
Lu180	Yb180 (Syn)
Lu181	None known
Lu182	None known
Lu183	None known
Lu184	None known
meta state 0.000MeV	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

Lu - Lutetium

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