Isotopes of Tantalum

List of known isotopes of the element Tantalum.

Isotope	t½	%	Spin/parity	Radius	Isotopic mass	Discovery
¹⁵⁵Ta	2.9 ± ms	syn.	11/2-	—	1.549·10⁸ ±322 keV/c²	2007
¹⁵⁶Ta	106 ±4 ms	syn.	(2-)	—	1.559·10⁸ ±322 keV/c²	1992
¹⁵⁷Ta	10.1 ±4 ms	syn.	1/2+	—	1.569·10⁸ ±161 keV/c²	1979
¹⁵⁸Ta	55 ±15 ms	syn.	(2-)	—	1.579·10⁸ ±215 keV/c²	1979
¹⁵⁹Ta	0.83 ±18 s	syn.	1/2+	—	1.589·10⁸ ±21.13 keV/c²	1979
¹⁶⁰Ta	1.55 ±4 s	syn.	—	—	1.599·10⁸ ±58.31 keV/c²	1979
¹⁶¹Ta	stab.	syn.	(1/2+)	—	1.609·10⁸ ±26.17 keV/c²	1979
¹⁶²Ta	3.57 ±12 s	syn.	—	—	1.619·10⁸ ±67.97 keV/c²	1985
¹⁶³Ta	10.6 ±18 s	syn.	—	—	1.629·10⁸ ±40.86 keV/c²	1985
¹⁶⁴Ta	14.2 ±3 s	syn.	(3+)	—	1.639·10⁸ ±30 keV/c²	1982
¹⁶⁵Ta	31 ±15 s	syn.	(9/2-)	—	1.649·10⁸ ±14.57 keV/c²	1982
¹⁶⁶Ta	34.4 ±5 s	syn.	(2)+	—	1.659·10⁸ ±30 keV/c²	1977
¹⁶⁷Ta	80 ±4 s	syn.	(3/2+)	—	1.669·10⁸ ±30 keV/c²	1982
¹⁶⁸Ta	2 ±1 m	syn.	(2- 3+)	—	1.679·10⁸ ±30 keV/c²	1969
¹⁶⁹Ta	4.9 ±4 m	syn.	(5/2+)	—	1.689·10⁸ ±30 keV/c²	1969
¹⁷⁰Ta	6.76 ±6 m	syn.	(3+)	—	1.699·10⁸ ±30 keV/c²	1969
¹⁷¹Ta	23.3 ±3 m	syn.	(5/2+)	—	1.709·10⁸ ±30 keV/c²	1969
¹⁷²Ta	36.8 ±3 m	syn.	(3+)	—	1.719·10⁸ ±30 keV/c²	1964
¹⁷³Ta	3.14 ±13 h	syn.	5/2-	—	1.729·10⁸ ±30 keV/c²	1960
¹⁷⁴Ta	1.14 ±8 h	syn.	3+	—	1.739·10⁸ ±30 keV/c²	1960
¹⁷⁵Ta	10.5 ±2 h	syn.	7/2+	—	1.749·10⁸ ±30 keV/c²	1960
¹⁷⁶Ta	8.09 ±5 h	syn.	(1)-	—	1.759·10⁸ ±33 keV/c²	1948
¹⁷⁷Ta	56.36 ±13 h	syn.	7/2+	—	1.769·10⁸ ±3.558 keV/c²	1948
¹⁷⁸Ta	2.36 ±8 h	syn.	7-	—	1.779·10⁸ ±56 keV/c²	1950
¹⁷⁹Ta	1.82 ±3 a	syn.	7/2+	—	1.789·10⁸ ±1.574 keV/c²	1950
¹⁸⁰Ta	8.154 ±6 h	syn.	1+	—	1.799·10⁸ ±2.219 keV/c²	1938
¹⁸¹Ta	stab.	99.98 ±3.2·10^-4 %	7/2+	5.35 ±0.0034 fm	1.809·10⁸ ±1.692 keV/c²	1932
¹⁸²Ta	114.7 ±12 d	syn.	3-	—	1.819·10⁸ ±1.693 keV/c²	1938
¹⁸³Ta	5.1 ±1 d	syn.	7/2+	—	1.829·10⁸ ±1.707 keV/c²	1950
¹⁸⁴Ta	8.7 ±1 h	syn.	(5-)	—	1.839·10⁸ ±27.92 keV/c²	1955
¹⁸⁵Ta	49.4 ±15 m	syn.	(7/2+)	—	1.849·10⁸ ±15.2 keV/c²	1950
¹⁸⁶Ta	10.39 ±3 m	syn.	(3-)	—	1.859·10⁸ ±64.42 keV/c²	1955
¹⁸⁷Ta	283 ±10 s	syn.	(7/2+)	—	1.869·10⁸ ±60 keV/c²	1999
¹⁸⁸Ta	19.6 ±20 s	syn.	(1-)	—	1.879·10⁸ ±215 keV/c²	1999
¹⁸⁹Ta	stab.	syn.	—	—	1.889·10⁸ ±215 keV/c²	1999
¹⁹⁰Ta	5.3 ±7 s	syn.	(3)	—	1.899·10⁸ ±215 keV/c²	2009
¹⁹¹Ta	300 ns	syn.	—	—	1.909·10⁸ ±322 keV/c²	2009
¹⁹²Ta	2.2 ±7 s	syn.	(1 2)	—	1.919·10⁸ ±429 keV/c²	2009
¹⁹³Ta	stab.	syn.	—	—	1.929·10⁸ ±429 keV/c²	2012
¹⁹⁴Ta	stab.	syn.	—	—	1.939·10⁸ ±537 keV/c²	2012

155TaTantalum-155

Classification	z: 73; n: 82; m: 155
Half life	2.9 ± ms
Natural abundance	synthetic nuclide
Spin/parity	11/2-
Decay modes	proton emission
Discovery	2007
Mass excess	-23,990 ±300 keV
Binding energy	7,858 ±2 keV
Single-particle energy	-1,453 ±15 keV
Q value for electron capture	10,320 ±424.2 keV

Point at nuclide Decay chain of Tantalum-155

156TaTantalum-156

Classification	z: 73; n: 83; m: 156
Half life	106 ±4 ms
Natural abundance	synthetic nuclide
Spin/parity	(2-)
Decay modes	proton emission; electron capture + β⁺ decay
Discovery	1992
Mass excess	-26,010 ±300 keV
Binding energy	7,872 ±2 keV
Single-particle energy	-1,020 ±4.269 keV
Neutron separation energy	10,080 ±424 keV
Q value for electron capture	11,810 ±335.2 keV

Point at nuclide Decay chain of Tantalum-156

157TaTantalum-157

Classification	z: 73; n: 84; m: 157
Half life	10.1 ±4 ms
Natural abundance	synthetic nuclide
Spin/parity	1/2+
Decay modes	α decay; proton emission
Discovery	1979
Mass excess	-29,600 ±150 keV
Binding energy	7,896 ±0.9557 keV
Single-particle energy	-934.6 ±9.673 keV
Neutron separation energy	11,660 ±335 keV
Q value for electron capture	9,259 ±250 keV
β⁻ decay energy	-9,906 ±427 keV

Point at nuclide Decay chain of Tantalum-157

158TaTantalum-158

Classification	z: 73; n: 85; m: 158
Half life	55 ±15 ms
Natural abundance	synthetic nuclide
Spin/parity	(2-)
Decay modes	α decay; electron capture + β⁺ decay
Discovery	1979
Mass excess	-31,120 ±201 keV
Binding energy	7,907 ±1 keV
Single-particle energy	-447.7 ±12.9 keV
Neutron separation energy	9,594 ±251 keV
Q value for electron capture	10,980 ±201.7 keV
β⁻ decay energy	-7,426 ±361 keV
β⁻ decay energy with neutron	-19,500 ±447 keV

Point at nuclide Decay chain of Tantalum-158

159TaTantalum-159

Classification	z: 73; n: 86; m: 159
Half life	0.83 ±18 s
Natural abundance	synthetic nuclide
Spin/parity	1/2+
Decay modes	electron capture + β⁺ decay; α decay
Discovery	1979
Mass excess	-34,440 ±19.68 keV
Binding energy	7,928 ±0.1238 keV
Single-particle energy	-374.3 ±9.035 keV
Neutron separation energy	11,390 ±202 keV
Q value for electron capture	8,413 ±25.89 keV
β⁻ decay energy	-9,005 ±301 keV
β⁻ decay energy with neutron	-18,820 ±301 keV

Point at nuclide Decay chain of Tantalum-159

160TaTantalum-160

Classification	z: 73; n: 87; m: 160
Half life	1.55 ±4 s
Natural abundance	synthetic nuclide
Decay modes	α decay
Discovery	1979
Mass excess	-35,830 ±54.31 keV
Binding energy	7,938 ±0.3395 keV
Single-particle energy	260 ±56.85 keV
Neutron separation energy	9,455 ±57.77 keV
Q value for electron capture	10,110 ±55.14 keV
β⁻ decay energy	-6,495 ±139.8 keV
β⁻ decay energy with neutron	-18,470 ±305 keV

Point at nuclide Decay chain of Tantalum-160

161TaTantalum-161

Classification	z: 73; n: 88; m: 161
Half life	stable nuclide
Natural abundance	synthetic nuclide
Spin/parity	(1/2+)
Discovery	1979
Mass excess	-38,780 ±24.38 keV
Binding energy	7,957 ±0.1514 keV
Single-particle energy	128.7 ±23.38 keV
Neutron separation energy	11,020 ±59.53 keV
Q value for electron capture	7,537 ±33.82 keV
β⁻ decay energy	-8,272 ±202 keV
β⁻ decay energy with neutron	-17,530 ±151.7 keV

Point at nuclide

162TaTantalum-162

Classification	z: 73; n: 89; m: 162
Half life	3.57 ±12 s
Natural abundance	synthetic nuclide
Decay modes	electron capture + β⁺ decay; α decay; electron capture + proton emission
Discovery	1985
Mass excess	-39,790 ±63.32 keV
Binding energy	7,964 ±0.3909 keV
Single-particle energy	754.5 ±67.52 keV
Neutron separation energy	9,074 ±67.85 keV
Q value for electron capture	9,387 ±63.95 keV
β⁻ decay energy	-5,783 ±63.32 keV
β⁻ decay energy with neutron	-17,350 ±210 keV

Point at nuclide Decay chain of Tantalum-162

163TaTantalum-163

Classification	z: 73; n: 90; m: 163
Half life	10.6 ±18 s
Natural abundance	synthetic nuclide
Decay modes	electron capture + β⁺ decay; α decay
Discovery	1985
Mass excess	-42,540 ±38.06 keV
Binding energy	7,981 ±0.2335 keV
Single-particle energy	655.1 ±39.1 keV
Neutron separation energy	10,820 ±73.88 keV
Q value for electron capture	6,734 ±45.92 keV
β⁻ decay energy	-7,627 ±69.73 keV
β⁻ decay energy with neutron	-16,610 ±41.95 keV

Point at nuclide Decay chain of Tantalum-163

164TaTantalum-164

Classification	z: 73; n: 91; m: 164
Half life	14.2 ±3 s
Natural abundance	synthetic nuclide
Spin/parity	(3+)
Decay modes	electron capture + β⁺ decay; α decay
Discovery	1982
Mass excess	-43,290 ±27.94 keV
Binding energy	7,986 ±0.1704 keV
Single-particle energy	1,302 ±37.96 keV
Neutron separation energy	8,819 ±47.21 keV
Q value for electron capture	8,535 ±32.1 keV
β⁻ decay energy	-5,048 ±29.57 keV
β⁻ decay energy with neutron	-16,450 ±64.76 keV

Point at nuclide Decay chain of Tantalum-164

165TaTantalum-165

Classification	z: 73; n: 92; m: 165
Half life	31 ±15 s
Natural abundance	synthetic nuclide
Spin/parity	(9/2-)
Decay modes	electron capture + β⁺ decay
Discovery	1982
Mass excess	-45,850 ±13.57 keV
Binding energy	8,003 ±0.0823 keV
Single-particle energy	1,318 ±20.01 keV
Neutron separation energy	10,630 ±31.06 keV
Q value for electron capture	5,787 ±31.06 keV
β⁻ decay energy	-6,987 ±29.11 keV
β⁻ decay energy with neutron	-15,690 ±16.66 keV

Point at nuclide Decay chain of Tantalum-165

166TaTantalum-166

Classification	z: 73; n: 93; m: 166
Half life	34.4 ±5 s
Natural abundance	synthetic nuclide
Spin/parity	(2)+
Decay modes	electron capture + β⁺ decay
Discovery	1977
Mass excess	-46,100 ±27.94 keV
Binding energy	8,004 ±0.1683 keV
Single-particle energy	1,751 ±39.51 keV
Neutron separation energy	8,321 ±31.06 keV
Q value for electron capture	7,761 ±39.52 keV
β⁻ decay energy	-4,211 ±29.5 keV
β⁻ decay energy with neutron	-15,310 ±38 keV

Point at nuclide Decay chain of Tantalum-166

167TaTantalum-167

Classification	z: 73; n: 94; m: 167
Half life	80 ±4 s
Natural abundance	synthetic nuclide
Spin/parity	(3/2+)
Decay modes	electron capture + β⁺ decay
Discovery	1982
Mass excess	-48,360 ±27.94 keV
Binding energy	8,018 ±0.1673 keV
Single-particle energy	1,781 ±39.51 keV
Neutron separation energy	10,320 ±39.51 keV
Q value for electron capture	5,116 ±39.52 keV
β⁻ decay energy	-6,258 ±33.62 keV
β⁻ decay energy with neutron	-14,540 ±29.5 keV

Point at nuclide Decay chain of Tantalum-167

168TaTantalum-168

Classification	z: 73; n: 95; m: 168
Half life	2 ±1 m
Natural abundance	synthetic nuclide
Spin/parity	(2- 3+)
Decay modes	electron capture + β⁺ decay
Discovery	1969
Mass excess	-48,400 ±27.94 keV
Binding energy	8,019 ±0.1663 keV
Single-particle energy	2,215 ±39.51 keV
Neutron separation energy	8,114 ±39.51 keV
Q value for electron capture	6,966 ±39.52 keV
β⁻ decay energy	-3,501 ±30.93 keV
β⁻ decay energy with neutron	-14,380 ±33.62 keV

Point at nuclide Decay chain of Tantalum-168

169TaTantalum-169

Classification	z: 73; n: 96; m: 169
Half life	4.9 ±4 m
Natural abundance	synthetic nuclide
Spin/parity	(5/2+)
Decay modes	electron capture + β⁺ decay
Discovery	1969
Mass excess	-50,300 ±27.94 keV
Binding energy	8,030 ±0.1654 keV
Single-particle energy	2,218 ±39.51 keV
Neutron separation energy	9,967 ±39.51 keV
Q value for electron capture	4,426 ±39.52 keV
β⁻ decay energy	-5,373 ±31.92 keV
β⁻ decay energy with neutron	-13,470 ±30.93 keV

Point at nuclide Decay chain of Tantalum-169

170TaTantalum-170

Classification	z: 73; n: 97; m: 170
Half life	6.76 ±6 m
Natural abundance	synthetic nuclide
Spin/parity	(3+)
Decay modes	electron capture + β⁺ decay
Discovery	1969
Mass excess	-50,140 ±27.94 keV
Binding energy	8,030 ±0.1644 keV
Single-particle energy	2,709 ±39.51 keV
Neutron separation energy	7,918 ±39.51 keV
Q value for electron capture	6,116 ±39.52 keV
β⁻ decay energy	-2,847 ±30.9 keV
β⁻ decay energy with neutron	-13,300 ±31.92 keV

Point at nuclide Decay chain of Tantalum-170

171TaTantalum-171

Classification	z: 73; n: 98; m: 171
Half life	23.3 ±3 m
Natural abundance	synthetic nuclide
Spin/parity	(5/2+)
Decay modes	electron capture + β⁺ decay
Discovery	1969
Mass excess	-51,730 ±27.94 keV
Binding energy	8,039 ±0.1634 keV
Single-particle energy	2,755 ±39.51 keV
Neutron separation energy	9,653 ±39.51 keV
Q value for electron capture	3,711 ±40.18 keV
β⁻ decay energy	-4,635 ±39.51 keV
β⁻ decay energy with neutron	-12,510 ±30.9 keV
Electric quadrupole moment	3.1 ±0.2 b

Point at nuclide Decay chain of Tantalum-171

172TaTantalum-172

Classification	z: 73; n: 99; m: 172
Half life	36.8 ±3 m
Natural abundance	synthetic nuclide
Spin/parity	(3+)
Decay modes	electron capture + β⁺ decay
Discovery	1964
Mass excess	-51,330 ±27.94 keV
Binding energy	8,037 ±0.1625 keV
Single-particle energy	3,187 ±40.18 keV
Neutron separation energy	7,681 ±39.51 keV
Q value for electron capture	5,072 ±37.11 keV
β⁻ decay energy	-2,233 ±39.51 keV
β⁻ decay energy with neutron	-12,320 ±39.51 keV

Point at nuclide Decay chain of Tantalum-172

173TaTantalum-173

Classification	z: 73; n: 100; m: 173
Half life	3.14 ±13 h
Natural abundance	synthetic nuclide
Spin/parity	5/2-
Decay modes	electron capture + β⁺ decay
Discovery	1960
Mass excess	-52,400 ±27.94 keV
Binding energy	8,044 ±0.1615 keV
Single-particle energy	3,283 ±37.11 keV
Neutron separation energy	9,137 ±39.51 keV
Q value for electron capture	3,015 ±39.52 keV
β⁻ decay energy	-3,670 ±39.51 keV
β⁻ decay energy with neutron	-11,380 ±39.51 keV
Magnetic dipole moment	1.7 ±0.03 μN
Electric quadrupole moment	-1.8 ±0.2 b

Point at nuclide Decay chain of Tantalum-173

174TaTantalum-174

Classification	z: 73; n: 101; m: 174
Half life	1.14 ±8 h
Natural abundance	synthetic nuclide
Spin/parity	3+
Decay modes	electron capture + β⁺ decay
Discovery	1960
Mass excess	-51,750 ±27.94 keV
Binding energy	8,040 ±0.1606 keV
Single-particle energy	3,617 ±39.51 keV
Neutron separation energy	7,415 ±39.51 keV
Q value for electron capture	4,103 ±28.03 keV
β⁻ decay energy	-1,514 ±39.51 keV
β⁻ decay energy with neutron	-11,090 ±39.51 keV

Point at nuclide Decay chain of Tantalum-174

175TaTantalum-175

Classification	z: 73; n: 102; m: 175
Half life	10.5 ±2 h
Natural abundance	synthetic nuclide
Spin/parity	7/2+
Decay modes	electron capture + β⁺ decay
Discovery	1960
Mass excess	-52,410 ±27.94 keV
Binding energy	8,044 ±0.1597 keV
Single-particle energy	3,853 ±28.03 keV
Neutron separation energy	8,739 ±39.51 keV
Q value for electron capture	2,073 ±28.03 keV
β⁻ decay energy	-2,776 ±39.51 keV
β⁻ decay energy with neutron	-10,260 ±39.51 keV
Magnetic dipole moment	2.27 ±0.05 μN
Electric quadrupole moment	3.5 ±0.3 b

Point at nuclide Decay chain of Tantalum-175

176TaTantalum-176

Classification	z: 73; n: 103; m: 176
Half life	8.09 ±5 h
Natural abundance	synthetic nuclide
Spin/parity	(1)-
Decay modes	electron capture + β⁺ decay
Discovery	1948
Mass excess	-51,370 ±30.73 keV
Binding energy	8,038 ±0.1747 keV
Single-particle energy	4,172 ±30.82 keV
Neutron separation energy	7,028 ±41.54 keV
Q value for electron capture	3,211 ±30.77 keV
β⁻ decay energy	-723.8 ±41.54 keV
β⁻ decay energy with neutron	-9,804 ±41.54 keV

Point at nuclide Decay chain of Tantalum-176

177TaTantalum-177

Classification	z: 73; n: 104; m: 177
Half life	56.36 ±13 h
Natural abundance	synthetic nuclide
Spin/parity	7/2+
Decay modes	electron capture + β⁺ decay
Discovery	1948
Mass excess	-51,720 ±3.315 keV
Binding energy	8,040 ±0.0187 keV
Single-particle energy	4,427 ±3.168 keV
Neutron separation energy	8,420 ±30.91 keV
Q value for electron capture	1,166 ±3.6 keV
β⁻ decay energy	-2,014 ±28.14 keV
β⁻ decay energy with neutron	-9,145 ±28.14 keV
Magnetic dipole moment	2.25 ±0.05 μN

Point at nuclide Decay chain of Tantalum-177

178TaTantalum-178

Classification	z: 73; n: 105; m: 178
Half life	2.36 ±8 h
Natural abundance	synthetic nuclide
Spin/parity	7-
Decay modes	electron capture + β⁺ decay
Discovery	1950
Mass excess	-50,600 ±52 keV
Binding energy	8,035 keV
Single-particle energy	5,007 ±52 keV
Neutron separation energy	6,955 ±52 keV
Q value for electron capture	1,837 ±52.01 keV
β⁻ decay energy	-191 ±50 keV
β⁻ decay energy with neutron	-8,968 ±59 keV
Magnetic dipole moment	2.74 ±0.012 μN

Point at nuclide Decay chain of Tantalum-178

179TaTantalum-179

Classification	z: 73; n: 106; m: 179
Half life	1.82 ±3 a
Natural abundance	synthetic nuclide
Spin/parity	7/2+
Decay modes	electron capture (EC)
Discovery	1950
Mass excess	-50,360 ±1.466 keV
Binding energy	8,033 ±0.0082 keV
Single-particle energy	5,211 ±0.4159 keV
Neutron separation energy	7,830 ±52 keV
Q value for electron capture	105.5 ±2.03 keV
β⁻ decay energy	-1,063 ±14.51 keV
β⁻ decay energy with neutron	-8,022 ±15.13 keV
Magnetic dipole moment	2.286 ±0.006 μN
Electric quadrupole moment	3.27 ±0.04 b

Point at nuclide Decay chain of Tantalum-179

180TaTantalum-180

Classification	z: 73; n: 107; m: 180
Half life	8.154 ±6 h
Natural abundance	synthetic nuclide
Spin/parity	1+
Decay modes	electron capture (EC); β⁻ decay
Discovery	1938
Mass excess	-48,940 ±2.068 keV
Binding energy	8,025 ±0.0115 keV
Single-particle energy	5,759 ±2.343 keV
Neutron separation energy	6,647 ±2.368 keV
Q value for electron capture	845.8 ±2.509 keV
β⁻ decay energy	702.6 ±2.359 keV
β⁻ decay energy with neutron	-7,710 ±14.69 keV
Magnetic dipole moment	4.814 ±0.012 μN
Electric quadrupole moment	4.8 ±0.03 b

Point at nuclide Decay chain of Tantalum-180

181TaTantalum-181

Classification	z: 73; n: 108; m: 181
Half life	stable nuclide
Natural abundance	99.98 ±3.2·10^-4 %
Spin/parity	7/2+
Discovery	1932
Mass excess	-48,440 ±1.576 keV
Binding energy	8,023 ±0.0087 keV
Single-particle energy	5,948 ±1.928 keV
Neutron separation energy	7,576 ±1.337 keV
Q value for electron capture	-1,037 ±2.123 keV
β⁻ decay energy	-205.2 ±1.949 keV
β⁻ decay energy with neutron	-6,875 ±1.942 keV
Magnetic dipole moment	2.365 ±0.004 μN
Electric quadrupole moment	3.17 ±0.02 b

Point at nuclide

182TaTantalum-182

Classification	z: 73; n: 109; m: 182
Half life	114.7 ±12 d
Natural abundance	synthetic nuclide
Spin/parity	3-
Decay modes	β⁻ decay
Discovery	1938
Mass excess	-46,440 ±1.578 keV
Binding energy	8,012 ±0.0087 keV
Single-particle energy	6,316 ±1.931 keV
Neutron separation energy	6,062 ±0.1052 keV
Q value for electron capture	-381.1 ±6.365 keV
β⁻ decay energy	1,815 ±1.527 keV
β⁻ decay energy with neutron	-6,269 ±1.95 keV
Magnetic dipole moment	3.02 ±0.03 μN
Electric quadrupole moment	2.6 ±0.3 b

Point at nuclide Decay chain of Tantalum-182

183TaTantalum-183

Classification	z: 73; n: 110; m: 183
Half life	5.1 ±1 d
Natural abundance	synthetic nuclide
Spin/parity	7/2+
Decay modes	β⁻ decay
Discovery	1950
Mass excess	-45,300 ±1.59 keV
Binding energy	8,006 ±0.0087 keV
Single-particle energy	6,532 ±6.305 keV
Neutron separation energy	6,934 ±0.2 keV
Q value for electron capture	-2,010 ±30 keV
β⁻ decay energy	1,072 ±1.54 keV
β⁻ decay energy with neutron	-5,119 ±1.54 keV
Magnetic dipole moment	2.36 ±0.03 μN

Point at nuclide Decay chain of Tantalum-183

184TaTantalum-184

Classification	z: 73; n: 111; m: 184
Half life	8.7 ±1 h
Natural abundance	synthetic nuclide
Spin/parity	(5-)
Decay modes	β⁻ decay
Discovery	1955
Mass excess	-42,840 ±26.01 keV
Binding energy	7,993 ±0.1414 keV
Single-particle energy	6,844 ±39.72 keV
Neutron separation energy	5,617 ±26.04 keV
Q value for electron capture	-1,340 ±47.4 keV
β⁻ decay energy	2,866 ±26 keV
β⁻ decay energy with neutron	-4,546 ±26 keV

Point at nuclide Decay chain of Tantalum-184

185TaTantalum-185

Classification	z: 73; n: 112; m: 185
Half life	49.4 ±15 m
Natural abundance	synthetic nuclide
Spin/parity	(7/2+)
Decay modes	β⁻ decay
Discovery	1950
Mass excess	-41,400 ±14.16 keV
Binding energy	7,986 ±0.0765 keV
Single-particle energy	7,183 ±42.14 keV
Neutron separation energy	6,626 ±29.59 keV
Q value for electron capture	-3,075 ±65.81 keV
β⁻ decay energy	1,993 ±14.14 keV
β⁻ decay energy with neutron	-3,761 ±14.14 keV

Point at nuclide Decay chain of Tantalum-185

186TaTantalum-186

Classification	z: 73; n: 113; m: 186
Half life	10.39 ±3 m
Natural abundance	synthetic nuclide
Spin/parity	(3-)
Decay modes	β⁻ decay
Discovery	1955
Mass excess	-38,610 ±60.01 keV
Binding energy	7,971 ±0.3226 keV
Single-particle energy	7,576 ±87.93 keV
Neutron separation energy	5,284 ±61.65 keV
Q value for electron capture	-2,184 ±78.9 keV
β⁻ decay energy	3,901 ±60 keV
β⁻ decay energy with neutron	-3,292 ±60.01 keV

Point at nuclide Decay chain of Tantalum-186

187TaTantalum-187

Classification	z: 73; n: 114; m: 187
Half life	283 ±10 s
Natural abundance	synthetic nuclide
Spin/parity	(7/2+)
Decay modes	β⁻ decay
Discovery	1999
Mass excess	-36,900 ±55.89 keV
Binding energy	7,963 ±0.2989 keV
Single-particle energy	7,760 ±75.81 keV
Neutron separation energy	6,359 ±82 keV
Q value for electron capture	-3,896 ±207.6 keV
β⁻ decay energy	3,008 ±55.9 keV
β⁻ decay energy with neutron	-2,459 ±55.9 keV

Point at nuclide Decay chain of Tantalum-187

188TaTantalum-188

Classification	z: 73; n: 115; m: 188
Half life	19.6 ±20 s
Natural abundance	synthetic nuclide
Spin/parity	(1-)
Decay modes	β⁻ decay
Discovery	1999
Mass excess	-33,910 ±200 keV
Binding energy	7,948 ±1 keV
Single-particle energy	8,199 ±283 keV
Neutron separation energy	5,086 ±208 keV
Q value for electron capture	-3,080 ±360.5 keV
β⁻ decay energy	4,758 ±200 keV
β⁻ decay energy with neutron	-2,077 ±200 keV

Point at nuclide Decay chain of Tantalum-188

189TaTantalum-189

Classification	z: 73; n: 116; m: 189
Half life	stable nuclide
Natural abundance	synthetic nuclide
Discovery	1999
Mass excess	-31,960 ±200 keV
Binding energy	7,938 ±1 keV
Single-particle energy	8,419 ±361 keV
Neutron separation energy	6,121 ±283 keV
Q value for electron capture	-4,810 ±360.5 keV
β⁻ decay energy	3,850 ±283 keV
β⁻ decay energy with neutron	-1,363 ±200 keV

Point at nuclide

190TaTantalum-190

Classification	z: 73; n: 117; m: 190
Half life	5.3 ±7 s
Natural abundance	synthetic nuclide
Spin/parity	(3)
Decay modes	β⁻ decay
Discovery	2009
Mass excess	-28,720 ±200 keV
Binding energy	7,922 ±1 keV
Single-particle energy	8,859 ±361 keV
Neutron separation energy	4,832 ±283 keV
Q value for electron capture	-3,920 ±447.2 keV
β⁻ decay energy	5,649 ±203 keV
β⁻ decay energy with neutron	-982 ±283 keV

Point at nuclide Decay chain of Tantalum-190

191TaTantalum-191

Classification	z: 73; n: 118; m: 191
Half life	300 ns
Natural abundance	synthetic nuclide
Decay modes	β⁻ decay
Discovery	2009
Mass excess	-26,520 ±300 keV
Binding energy	7,911 ±2 keV
Single-particle energy	9,009 ±500 keV
Neutron separation energy	5,871 ±361 keV
β⁻ decay energy	4,657 ±303 keV
β⁻ decay energy with neutron	-222 ±302 keV

Point at nuclide Decay chain of Tantalum-191

192TaTantalum-192

Classification	z: 73; n: 119; m: 192
Half life	2.2 ±7 s
Natural abundance	synthetic nuclide
Spin/parity	(1 2)
Decay modes	β⁻ decay
Discovery	2009
Mass excess	-23,100 ±400 keV
Binding energy	7,894 ±2 keV
Neutron separation energy	4,652 ±500 keV
β⁻ decay energy	6,520 ±447 keV
β⁻ decay energy with neutron	5 ±402 keV

Point at nuclide Decay chain of Tantalum-192

193TaTantalum-193

Classification	z: 73; n: 120; m: 193
Half life	stable nuclide
Natural abundance	synthetic nuclide
Discovery	2012
Mass excess	-20,810 ±400 keV
Binding energy	7,883 ±2 keV
Neutron separation energy	5,781 ±565 keV
β⁻ decay energy	5,380 ±447 keV
β⁻ decay energy with neutron	739 ±447 keV

Point at nuclide

194TaTantalum-194

Classification	z: 73; n: 121; m: 194
Half life	stable nuclide
Natural abundance	synthetic nuclide
Discovery	2012
Mass excess	-17,130 ±500 keV
Binding energy	7,865 ±3 keV
Neutron separation energy	4,392 ±640 keV
β⁻ decay energy	7,280 ±583 keV
β⁻ decay energy with neutron	988 ±539 keV

Point at nuclide

Isotopes of Tantalum

155TaTantalum-155ads_clickcall_splitdownload

156TaTantalum-156ads_clickcall_splitdownload

157TaTantalum-157ads_clickcall_splitdownload

158TaTantalum-158ads_clickcall_splitdownload

159TaTantalum-159ads_clickcall_splitdownload

160TaTantalum-160ads_clickcall_splitdownload

161TaTantalum-161ads_clickdownload

162TaTantalum-162ads_clickcall_splitdownload

163TaTantalum-163ads_clickcall_splitdownload

164TaTantalum-164ads_clickcall_splitdownload

165TaTantalum-165ads_clickcall_splitdownload

166TaTantalum-166ads_clickcall_splitdownload

167TaTantalum-167ads_clickcall_splitdownload

168TaTantalum-168ads_clickcall_splitdownload

169TaTantalum-169ads_clickcall_splitdownload

170TaTantalum-170ads_clickcall_splitdownload

171TaTantalum-171ads_clickcall_splitdownload

172TaTantalum-172ads_clickcall_splitdownload

173TaTantalum-173ads_clickcall_splitdownload

174TaTantalum-174ads_clickcall_splitdownload

175TaTantalum-175ads_clickcall_splitdownload

176TaTantalum-176ads_clickcall_splitdownload

177TaTantalum-177ads_clickcall_splitdownload

178TaTantalum-178ads_clickcall_splitdownload

179TaTantalum-179ads_clickcall_splitdownload

180TaTantalum-180ads_clickcall_splitdownload

181TaTantalum-181ads_clickdownload

182TaTantalum-182ads_clickcall_splitdownload

183TaTantalum-183ads_clickcall_splitdownload

184TaTantalum-184ads_clickcall_splitdownload

185TaTantalum-185ads_clickcall_splitdownload

186TaTantalum-186ads_clickcall_splitdownload

187TaTantalum-187ads_clickcall_splitdownload

188TaTantalum-188ads_clickcall_splitdownload

189TaTantalum-189ads_clickdownload

190TaTantalum-190ads_clickcall_splitdownload

191TaTantalum-191ads_clickcall_splitdownload

192TaTantalum-192ads_clickcall_splitdownload

193TaTantalum-193ads_clickdownload

194TaTantalum-194ads_clickdownload

155TaTantalum-155

156TaTantalum-156

157TaTantalum-157

158TaTantalum-158

159TaTantalum-159

160TaTantalum-160

161TaTantalum-161

162TaTantalum-162

163TaTantalum-163

164TaTantalum-164

165TaTantalum-165

166TaTantalum-166

167TaTantalum-167

168TaTantalum-168

169TaTantalum-169

170TaTantalum-170

171TaTantalum-171

172TaTantalum-172

173TaTantalum-173

174TaTantalum-174

175TaTantalum-175

176TaTantalum-176

177TaTantalum-177

178TaTantalum-178

179TaTantalum-179

180TaTantalum-180

181TaTantalum-181

182TaTantalum-182

183TaTantalum-183

184TaTantalum-184

185TaTantalum-185

186TaTantalum-186

187TaTantalum-187

188TaTantalum-188

189TaTantalum-189

190TaTantalum-190

191TaTantalum-191

192TaTantalum-192

193TaTantalum-193

194TaTantalum-194