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Periodic Table of Elements

Ho - Holmium

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Nuclides / Isotopes

Nuc- lide	Atomic Mass	NN	Abun %	Spin	Half Life	DM	DT	BR %	Decay Energy (MeV)
Ho141		74	Syn	7/2-	4.2ms	P
Ho142		75	Syn
Ho143	142.955	76	Syn
Ho144	143.955	77	Syn		0.7s	ε	Dy144		11.800
					0.7s	ε + P	Tb143		8.700
Ho145	144.947	78	Syn	11/2-	2.4s
Ho146	145.944	79	Syn	10+	3.6s	ε	Dy146		10.700
					3.6s	ε + P	Tb145		7.000
Ho147	146.94	80	Syn	11/2-	5.8s	ε	Dy147		8.100
					5.8s	ε + P	Tb146		4.500
Ho148	147.937	81	Syn	1+	2.2s	ε	Dy148		9.400
meta state 0.000MeV			Syn	6-	9.59s	ε + P	Tb147	0.08	5.000
					9.59s	ε	Dy148		9.400
Ho149	148.9338	82	Syn	11/2-	21.1s	ε	Dy149		6.014
meta state 0.049MeV			Syn	1/2+	56s	ε	Dy149		6.063
Ho150	149.933	83	Syn	2-	72s	ε	Dy150		7.240
meta state 0.800MeV			Syn	9+	23.3s	ε	Dy150		8.040
Ho151	150.9317	84	Syn	11/2-	35.2s	ε	Dy151	78	5.142
					35.2s	α	Tb147	22	4.695
meta state 0.041MeV			Syn	1/2+	47.2s	α	Tb147	80	4.736
					47.2s	ε	Dy151	20	5.165
Ho152	151.9317	85	Syn	2-	161.8s	ε	Dy152	88	6.550
					161.8s	α	Tb148	12	4.507
meta state 0.160MeV			Syn	9+	50s	ε	Dy152	89.2	6.710
					50s	α	Tb148	10.8	4.667
Ho153	152.9302	86	Syn	11/2-	2.01m	ε	Dy153	99.95	4.129
					2.01m	α	Tb149	0.05	4.051
meta state 0.068MeV			Syn	1/2+	9.3m	ε	Dy153	99.82	4.179
					9.3m	α	Tb149	0.18	4.119
Ho154	153.9306	87	Syn	2-	11.76m	ε	Dy154	99.98	5.751
					11.76m	α	Tb150	0.02	4.042
meta state 0.320MeV			Syn	8+	3.1m	α	Tb150	<0.001	4.362
					3.1m	IT	Ho154	~0	0.320
					3.1m	ε	Dy154		6.071
Ho155	154.9291	88	Syn	5/2+	48m	ε	Dy155		3.102
Ho156	155.93	89	Syn	4+	56m	ε	Dy156		5.060
meta state 0.052MeV			Syn	1+	9.5s	IT	Ho156		5.060
Ho157	156.9282	90	Syn	7/2-	12.6m	ε	Dy157		2.540
Ho158	157.9289	91	Syn	5+	11.3m	ε	Dy158		4.230
meta state 0.067MeV			Syn	2-	28m	IT		>81	0.067
					28m	ε	Dy158	<19	4.297
meta state 0.180MeV			Syn	9+	21.3m	ε	Dy158	>=93	4.410
					21.3m	IT		<=7	0.180
Ho159	158.9277	92	Syn	7/2-	33.05m	ε	Dy159		1.838
meta state 0.206MeV			Syn	1/2+	8.3s	IT			0.206
Ho160	159.9287	93	Syn	5+	25.6m	ε	Dy160		3.290
meta state 0.060MeV			Syn	2-	5.02h	IT		65	0.060
					5.02h	ε	Dy160	35	3.350
meta state 0.169MeV			Syn	9+	3s	IT			0.170
Ho161	160.9279	94	Syn	7/2-	2.48h	ε	Dy161		0.859
meta state 0.211MeV			Syn	1/2+	6.76s	IT			0.211
Ho162	161.9291	95	Syn	1+	15m	ε	Dy162		2.140
meta state 0.106MeV			Syn	6-	67m	IT		62	0.106
					67m	ε	Dy162	38	2.246
Ho163	162.9287	96	Syn	7/2-	4570y	ε	Dy163		0.003
meta state 0.297MeV			Syn	1/2+	1.09s	IT			0.298
Ho164	163.9302	97	Syn	1+	29m	ε	Dy164	60	0.987
					29m	β^-	Er164	40	0.962
meta state 0.140MeV			Syn	6-	37.5m	IT			0.140
Ho165	164.9303	98	100.	7/2-	Stable
Ho166	165.9323	99	Syn	0-	26.83h	β^-	Er166		1.855
meta state 0.006MeV			Syn	7-	1200y	β^-	Er166		1.861
Ho167	166.9331	100	Syn	7/2-	3.1h	β^-	Er167		1.007
Ho168	167.9355	101	Syn	3+	2.99m	β^-	Er168		2.910
meta state 0.059MeV			Syn	6+	132s	IT		>=99.5	0.059
					132s	β^-	Er168	<=0.5	2.969
Ho169	168.9369	102	Syn	7/2-	4.7m	β^-	Er169		2.124
Ho170	169.9396	103	Syn	6+	2.76m	β^-	Er170		3.870
meta state 0.120MeV			Syn	1+	43s	β^-	Er170		3.990
Ho171	170.941	104	Syn	7/2-	53s	β^-	Er171		3.200
Ho172		105	Syn		25s
Ho173		106	Syn
Ho174		107	Syn
Ho175		108	Syn

Nuclide	Potential Parent Nuclides
Ho141	None known
Ho142	None known
Ho143	None known
Ho144	None known
Ho145	None known
Ho146	Er146 (Syn)
Ho147	Er147 (Syn) Er147m (Syn)
Ho148	Er148 (Syn) Tm149 (Syn)
meta state 0.000MeV	None known
Ho149	Er149 (Syn) Er149m (Syn) Tm153 (Syn) Tm153m (Syn)
meta state 0.049MeV	None known
Ho150	Er150 (Syn) Tm154 (Syn) Tm154m (Syn)
meta state 0.800MeV	None known
Ho151	Er151 (Syn) Er151m (Syn) Tm155 (Syn) Tm155m (Syn)
meta state 0.041MeV	None known
Ho152	Er152 (Syn) Tm156 (Syn) Tm156m (Syn)
meta state 0.160MeV	None known
Ho153	Er153 (Syn)
meta state 0.068MeV	None known
Ho154	Er154 (Syn) Ho154m (Syn)
meta state 0.320MeV	None known
Ho155	Er155 (Syn)
Ho156	Er156 (Syn) Ho156m (Syn)
meta state 0.052MeV	None known
Ho157	Er157 (Syn)
Ho158	Er158 (Syn)
meta state 0.067MeV	None known
meta state 0.180MeV	None known
Ho159	Er159 (Syn)
meta state 0.206MeV	None known
Ho160	Er160 (Syn)
meta state 0.060MeV	None known
meta state 0.169MeV	None known
Ho161	Er161 (Syn)
meta state 0.211MeV	None known
Ho162	None known
meta state 0.106MeV	None known
Ho163	Er163 (Syn)
meta state 0.297MeV	None known
Ho164	None known
meta state 0.140MeV	None known
Ho165	Dy165 (Syn) Dy165m (Syn) Er165 (Syn)
Ho166	Dy166 (Syn)
meta state 0.006MeV	None known
Ho167	Dy167 (Syn)
Ho168	Dy168 (Syn)
meta state 0.059MeV	None known
Ho169	Dy169 (Syn)
Ho170	None known
meta state 0.120MeV	None known
Ho171	None known
Ho172	None known
Ho173	None known
Ho174	None known
Ho175	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

Ho - Holmium

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