Isotopes of Astatine

List of known isotopes of the element Astatine.

Isotope	t½	%	Spin/parity	Radius	Isotopic mass	Discovery
¹⁹¹At	1.7 ± ms	syn.	(1/2+)	—	1.91·10⁸ ±17.28 keV/c²	2003
¹⁹²At	88 ±6 ms	syn.	(9- 10-)	—	1.92·10⁸ ±29.92 keV/c²	2006
¹⁹³At	28 ± ms	syn.	(1/2+)	—	1.929·10⁸ ±23.22 keV/c²	2003
¹⁹⁴At	286 ±7 ms	syn.	(4- 5-)	—	1.939·10⁸ ±25.23 keV/c²	2009
¹⁹⁵At	290 ±20 ms	syn.	(1/2+)	—	1.949·10⁸ ±10.27 keV/c²	1999
¹⁹⁶At	0.388 ±7 s	syn.	(3+)	—	1.959·10⁸ ±32.45 keV/c²	1967
¹⁹⁷At	0.388 ±6 s	syn.	(9/2-)	—	1.969·10⁸ ±8.57 keV/c²	1967
¹⁹⁸At	4.2 ±2 s	syn.	(3+)	—	1.979·10⁸ ±5.265 keV/c²	1967
¹⁹⁹At	7.03 ±15 s	syn.	(9/2-)	—	1.989·10⁸ ±5.78 keV/c²	1967
²⁰⁰At	43 ±1 s	syn.	(3+)	—	1.999·10⁸ ±26.26 keV/c²	1963
²⁰¹At	87.6 ±13 s	syn.	9/2-	—	2.009·10⁸ ±8.786 keV/c²	1963
²⁰²At	184 ±1 s	syn.	(2+ 3+)	—	2.019·10⁸ ±29.63 keV/c²	1961
²⁰³At	7.4 ±2 m	syn.	9/2-	—	2.029·10⁸ ±11.4 keV/c²	1951
²⁰⁴At	9.12 ±11 m	syn.	7+	—	2.039·10⁸ ±24.33 keV/c²	1961
²⁰⁵At	26.9 ±8 m	syn.	9/2-	—	2.049·10⁸ ±12.94 keV/c²	1951
²⁰⁶At	30.6 ±8 m	syn.	(5)+	—	2.059·10⁸ ±14.52 keV/c²	1961
²⁰⁷At	1.81 ±3 h	syn.	9/2-	—	2.069·10⁸ ±13.31 keV/c²	1951
²⁰⁸At	1.63 ±3 h	syn.	6+	—	2.079·10⁸ ±9.577 keV/c²	1950
²⁰⁹At	5.42 ±5 h	syn.	9/2-	—	2.089·10⁸ ±5.094 keV/c²	1951
²¹⁰At	8.1 ±4 h	syn.	(5)+	—	2.099·10⁸ ±8.261 keV/c²	1949
²¹¹At	7.214 ±7 h	syn.	9/2-	—	2.109·10⁸ ±2.929 keV/c²	1940
²¹²At	0.314 ±3 s	syn.	(1-)	—	2.119·10⁸ ±2.559 keV/c²	1954
²¹³At	125 ±6 ns	syn.	9/2-	—	2.129·10⁸ ±5.258 keV/c²	1968
²¹⁴At	558 ±10 ns	syn.	1-	—	2.139·10⁸ ±4.274 keV/c²	1949
²¹⁵At	0.1 ±2 ms	syn.	9/2-	—	2.149·10⁸ ±7.116 keV/c²	1944
²¹⁶At	0.3 ±3 ms	syn.	1-	—	2.16·10⁸ ±3.837 keV/c²	1948
²¹⁷At	32.6 ±3 ms	syn.	9/2-	—	2.17·10⁸ ±5.368 keV/c²	1947
²¹⁸At	1.28 ±6 s	syn.	(3- 2-)	—	2.18·10⁸ ±12.34 keV/c²	1943
²¹⁹At	56 ±4 s	syn.	(9/2-)	—	2.19·10⁸ ±3.474 keV/c²	1953
²²⁰At	3.71 ±4 m	syn.	3	—	2.2·10⁸ ±15 keV/c²	1989
²²¹At	2.3 ±2 m	syn.	—	—	2.21·10⁸ ±15 keV/c²	1989
²²²At	54 ±10 s	syn.	—	—	2.22·10⁸ ±17 keV/c²	1989
²²³At	50 ±7 s	syn.	—	—	2.23·10⁸ ±15 keV/c²	1989
²²⁴At	1.3 ± m	syn.	—	—	2.24·10⁸ ±24 keV/c²	2010
²²⁵At	300 ns	syn.	—	—	2.25·10⁸ ±322 keV/c²	2010
²²⁶At	300 ns	syn.	—	—	2.26·10⁸ ±322 keV/c²	2010
²²⁷At	300 ns	syn.	—	—	2.27·10⁸ ±322 keV/c²	2010
²²⁸At	300 ns	syn.	—	—	2.28·10⁸ ±429 keV/c²	2010
²²⁹At	300 ns	syn.	—	—	2.29·10⁸ ±429 keV/c²	2010

191AtAstatine-191

Classification	z: 85; n: 106; m: 191
Half life	1.7 ± ms
Natural abundance	synthetic nuclide
Spin/parity	(1/2+)
Decay modes	α decay
Discovery	2003
Mass excess	3,863 ±16.1 keV
Binding energy	7,702 ±0.0843 keV
Single-particle energy	-1,138 ±20.79 keV
Q value for electron capture	8,932 ±17.6 keV

Point at nuclide Decay chain of Astatine-191

192AtAstatine-192

Classification	z: 85; n: 107; m: 192
Half life	88 ±6 ms
Natural abundance	synthetic nuclide
Spin/parity	(9- 10-)
Decay modes	α decay
Discovery	2006
Mass excess	2,925 ±27.87 keV
Binding energy	7,709 ±0.1452 keV
Single-particle energy	-705.6 ±28.76 keV
Neutron separation energy	9,009 ±32.19 keV
Q value for electron capture	10,990 ±29.83 keV

Point at nuclide Decay chain of Astatine-192

193AtAstatine-193

Classification	z: 85; n: 108; m: 193
Half life	28 ± ms
Natural abundance	synthetic nuclide
Spin/parity	(1/2+)
Decay modes	α decay
Discovery	2003
Mass excess	-67.33 ±21.63 keV
Binding energy	7,727 ±0.1121 keV
Single-particle energy	-710.2 ±24.1 keV
Neutron separation energy	11,060 ±35.28 keV
Q value for electron capture	8,257 ±26.05 keV
β⁻ decay energy	-9,111 ±33.14 keV

Point at nuclide Decay chain of Astatine-193

194AtAstatine-194

Classification	z: 85; n: 109; m: 194
Half life	286 ±7 ms
Natural abundance	synthetic nuclide
Spin/parity	(4- 5-)
Decay modes	α decay; spontaneous fission + electron capture + β⁺ decay; electron capture + β⁺ decay
Discovery	2009
Mass excess	-716.5 ±23.5 keV
Binding energy	7,732 ±0.1211 keV
Single-particle energy	-319.9 ±27.63 keV
Neutron separation energy	8,720 ±31.94 keV
Q value for electron capture	10,280 ±26.81 keV
β⁻ decay energy	-6,442 ±28.8 keV
β⁻ decay energy with neutron	-17,840 ±34.39 keV

Point at nuclide Decay chain of Astatine-194

195AtAstatine-195

Classification	z: 85; n: 110; m: 195
Half life	290 ±20 ms
Natural abundance	synthetic nuclide
Spin/parity	(1/2+)
Decay modes	α decay
Discovery	1999
Mass excess	-3,471 ±9.573 keV
Binding energy	7,748 ±0.0491 keV
Single-particle energy	-245.4 ±16.07 keV
Neutron separation energy	10,820 ±25.37 keV
Q value for electron capture	7,646 ±11.32 keV
β⁻ decay energy	-8,521 ±52.56 keV
β⁻ decay energy with neutron	-17,270 ±19.21 keV

Point at nuclide Decay chain of Astatine-195

196AtAstatine-196

Classification	z: 85; n: 111; m: 196
Half life	0.388 ±7 s
Natural abundance	synthetic nuclide
Spin/parity	(3+)
Decay modes	α decay; electron capture + β⁺ decay
Discovery	1967
Mass excess	-3,914 ±30.23 keV
Binding energy	7,752 ±0.1543 keV
Single-particle energy	85.49 ±30.83 keV
Neutron separation energy	8,514 ±31.71 keV
Q value for electron capture	9,555 ±30.71 keV
β⁻ decay energy	-5,889 ±33.34 keV
β⁻ decay energy with neutron	-17,040 ±59.88 keV
Magnetic dipole moment	3.72 ±0.14 μN
Electric quadrupole moment	-0.6 ±0.4 b

Point at nuclide Decay chain of Astatine-196

197AtAstatine-197

Classification	z: 85; n: 112; m: 197
Half life	0.388 ±6 s
Natural abundance	synthetic nuclide
Spin/parity	(9/2-)
Decay modes	α decay; electron capture + β⁺ decay
Discovery	1967
Mass excess	-6,356 ±7.983 keV
Binding energy	7,766 ±0.0405 keV
Single-particle energy	175.4 ±9.628 keV
Neutron separation energy	10,510 ±31.27 keV
Q value for electron capture	7,037 ±12.68 keV
β⁻ decay energy	-7,866 ±18.05 keV
β⁻ decay energy with neutron	-16,410 ±16.16 keV
Electric quadrupole moment	-1.2 ±0.6 b

Point at nuclide Decay chain of Astatine-197

198AtAstatine-198

Classification	z: 85; n: 113; m: 198
Half life	4.2 ±2 s
Natural abundance	synthetic nuclide
Spin/parity	(3+)
Decay modes	α decay; electron capture + β⁺ decay
Discovery	1967
Mass excess	-6,709 ±4.904 keV
Binding energy	7,769 ±0.0248 keV
Single-particle energy	604.6 ±11.01 keV
Neutron separation energy	8,424 ±9.369 keV
Q value for electron capture	8,764 ±18.1 keV
β⁻ decay energy	-5,479 ±14.28 keV
β⁻ decay energy with neutron	-16,300 ±16.91 keV
Electric quadrupole moment	-0.6 ±0.3 b

Point at nuclide Decay chain of Astatine-198

199AtAstatine-199

Classification	z: 85; n: 114; m: 199
Half life	7.03 ±15 s
Natural abundance	synthetic nuclide
Spin/parity	(9/2-)
Decay modes	α decay; electron capture + β⁺ decay
Discovery	1967
Mass excess	-8,824 ±5.384 keV
Binding energy	7,781 ±0.0271 keV
Single-particle energy	639 ±18.23 keV
Neutron separation energy	10,180 ±7.283 keV
Q value for electron capture	6,415 ±7.646 keV
β⁻ decay energy	-7,264 ±9.068 keV
β⁻ decay energy with neutron	-15,670 ±14.45 keV
Electric quadrupole moment	-1 ±0.5 b

Point at nuclide Decay chain of Astatine-199

200AtAstatine-200

Classification	z: 85; n: 115; m: 200
Half life	43 ±1 s
Natural abundance	synthetic nuclide
Spin/parity	(3+)
Decay modes	α decay; electron capture + β⁺ decay
Discovery	1963
Mass excess	-8,988 ±24.46 keV
Binding energy	7,783 ±0.1223 keV
Single-particle energy	1,038 ±25.06 keV
Neutron separation energy	8,235 ±25.05 keV
Q value for electron capture	7,953 ±25.61 keV
β⁻ decay energy	-4,988 ±25.14 keV
β⁻ decay energy with neutron	-15,500 ±25.52 keV
Magnetic dipole moment	4.28 ±0.15 μN
Electric quadrupole moment	-0.5 ±0.5 b

Point at nuclide Decay chain of Astatine-200

201AtAstatine-201

Classification	z: 85; n: 116; m: 201
Half life	87.6 ±13 s
Natural abundance	synthetic nuclide
Spin/parity	9/2-
Decay modes	α decay; electron capture + β⁺ decay
Discovery	1963
Mass excess	-10,790 ±8.184 keV
Binding energy	7,794 ±0.0407 keV
Single-particle energy	1,136 ±11.15 keV
Neutron separation energy	9,872 ±25.79 keV
Q value for electron capture	5,731 ±9.56 keV
β⁻ decay energy	-6,683 ±13.01 keV
β⁻ decay energy with neutron	-14,870 ±10.02 keV
Magnetic dipole moment	4.01 ±0.07 μN
Electric quadrupole moment	-1 ±0.5 b

Point at nuclide Decay chain of Astatine-201

202AtAstatine-202

Classification	z: 85; n: 117; m: 202
Half life	184 ±1 s
Natural abundance	synthetic nuclide
Spin/parity	(2+ 3+)
Decay modes	electron capture + β⁺ decay; α decay
Discovery	1961
Mass excess	-10,600 ±27.6 keV
Binding energy	7,794 ±0.1366 keV
Single-particle energy	1,362 ±28.04 keV
Neutron separation energy	7,876 ±28.78 keV
Q value for electron capture	7,346 ±28.93 keV
β⁻ decay energy	-4,321 ±32.69 keV
β⁻ decay energy with neutron	-14,560 ±29.39 keV
Electric quadrupole moment	-0.5 ±0.3 b

Point at nuclide Decay chain of Astatine-202

203AtAstatine-203

Classification	z: 85; n: 118; m: 203
Half life	7.4 ±2 m
Natural abundance	synthetic nuclide
Spin/parity	9/2-
Decay modes	electron capture + β⁺ decay; α decay
Discovery	1951
Mass excess	-12,170 ±10.62 keV
Binding energy	7,803 ±0.0523 keV
Single-particle energy	1,510 ±13.7 keV
Neutron separation energy	9,638 ±29.57 keV
Q value for electron capture	5,148 ±11.59 keV
β⁻ decay energy	-5,979 ±12.1 keV
β⁻ decay energy with neutron	-13,960 ±20.47 keV
Magnetic dipole moment	4 ±0.07 μN
Electric quadrupole moment	-0.7 ±0.4 b

Point at nuclide Decay chain of Astatine-203

204AtAstatine-204

Classification	z: 85; n: 119; m: 204
Half life	9.12 ±11 m
Natural abundance	synthetic nuclide
Spin/parity	7+
Decay modes	electron capture + β⁺ decay; α decay
Discovery	1961
Mass excess	-11,880 ±22.66 keV
Binding energy	7,803 ±0.1111 keV
Single-particle energy	1,853 ±23.13 keV
Neutron separation energy	7,783 ±25.03 keV
Q value for electron capture	6,465 ±24.8 keV
β⁻ decay energy	-3,906 ±23.85 keV
β⁻ decay energy with neutron	-13,770 ±23.4 keV
Magnetic dipole moment	4.82 ±0.18 μN
Electric quadrupole moment	-0.6 ±0.3 b

Point at nuclide Decay chain of Astatine-204

205AtAstatine-205

Classification	z: 85; n: 120; m: 205
Half life	26.9 ±8 m
Natural abundance	synthetic nuclide
Spin/parity	9/2-
Decay modes	electron capture + β⁺ decay; α decay
Discovery	1951
Mass excess	-12,990 ±12.05 keV
Binding energy	7,810 ±0.0588 keV
Single-particle energy	1,932 ±15.69 keV
Neutron separation energy	9,180 ±25.67 keV
Q value for electron capture	4,536 ±15.7 keV
β⁻ decay energy	-5,275 ±13.07 keV
β⁻ decay energy with neutron	-13,090 ±14.15 keV
Magnetic dipole moment	4.09 ±0.07 μN
Electric quadrupole moment	-0.6 ±0.3 b

Point at nuclide Decay chain of Astatine-205

206AtAstatine-206

Classification	z: 85; n: 121; m: 206
Half life	30.6 ±8 m
Natural abundance	synthetic nuclide
Spin/parity	(5)+
Decay modes	electron capture + β⁺ decay; α decay
Discovery	1961
Mass excess	-12,440 ±13.52 keV
Binding energy	7,808 ±0.0657 keV
Single-particle energy	2,206 ±16.85 keV
Neutron separation energy	7,526 ±18.08 keV
Q value for electron capture	5,749 ±14.11 keV
β⁻ decay energy	-3,307 ±16.02 keV
β⁻ decay energy with neutron	-12,810 ±14.44 keV
Magnetic dipole moment	4.37 ±0.17 μN
Electric quadrupole moment	-0.4 ±0.2 b

Point at nuclide Decay chain of Astatine-206

207AtAstatine-207

Classification	z: 85; n: 122; m: 207
Half life	1.81 ±3 h
Natural abundance	synthetic nuclide
Spin/parity	9/2-
Decay modes	electron capture + β⁺ decay; α decay
Discovery	1951
Mass excess	-13,230 ±12.4 keV
Binding energy	7,813 ±0.0599 keV
Single-particle energy	2,327 ±13.03 keV
Neutron separation energy	8,859 ±18.34 keV
Q value for electron capture	3,918 ±14.08 keV
β⁻ decay energy	-4,593 ±13.28 keV
β⁻ decay energy with neutron	-12,170 ±15.08 keV
Magnetic dipole moment	4.13 ±0.07 μN
Electric quadrupole moment	-0.5 ±0.3 b

Point at nuclide Decay chain of Astatine-207

208AtAstatine-208

Classification	z: 85; n: 123; m: 208
Half life	1.63 ±3 h
Natural abundance	synthetic nuclide
Spin/parity	6+
Decay modes	electron capture + β⁺ decay; α decay
Discovery	1950
Mass excess	-12,470 ±8.921 keV
Binding energy	7,811 ±0.0429 keV
Single-particle energy	2,613 ±11.12 keV
Neutron separation energy	7,313 ±15.27 keV
Q value for electron capture	4,999 ±9.076 keV
β⁻ decay energy	-2,815 ±13.52 keV
β⁻ decay energy with neutron	-11,910 ±10.1 keV
Magnetic dipole moment	4.46 ±0.18 μN
Electric quadrupole moment	-0.4 ±0.3 b

Point at nuclide Decay chain of Astatine-208

209AtAstatine-209

Classification	z: 85; n: 124; m: 209
Half life	5.42 ±5 h
Natural abundance	synthetic nuclide
Spin/parity	9/2-
Decay modes	electron capture + β⁺ decay; α decay
Discovery	1951
Mass excess	-12,890 ±4.745 keV
Binding energy	7,814 ±0.0227 keV
Single-particle energy	2,703 ±4.928 keV
Neutron separation energy	8,485 ±10.1 keV
Q value for electron capture	3,482 ±5.067 keV
β⁻ decay energy	-3,943 ±11.02 keV
β⁻ decay energy with neutron	-11,300 ±11.17 keV
Magnetic dipole moment	4.12 ±0.07 μN
Electric quadrupole moment	-0.4 ±0.2 b

Point at nuclide Decay chain of Astatine-209

210AtAstatine-210

Classification	z: 85; n: 125; m: 210
Half life	8.1 ±4 h
Natural abundance	synthetic nuclide
Spin/parity	(5)+
Decay modes	electron capture + β⁺ decay; α decay
Discovery	1949
Mass excess	-11,980 ±7.695 keV
Binding energy	7,811 ±0.0366 keV
Single-particle energy	2,895 ±7.73 keV
Neutron separation energy	7,159 ±8.98 keV
Q value for electron capture	3,980 ±7.78 keV
β⁻ decay energy	-2,368 ±8.922 keV
β⁻ decay energy with neutron	-11,110 ±12.58 keV
Magnetic dipole moment	4.72 ±0.16 μN
Electric quadrupole moment	-0.4 ±0.2 b

Point at nuclide Decay chain of Astatine-210

211AtAstatine-211

Classification	z: 85; n: 126; m: 211
Half life	7.214 ±7 h
Natural abundance	synthetic nuclide
Spin/parity	9/2-
Decay modes	electron capture (EC); α decay
Discovery	1940
Mass excess	-11,650 ±2.729 keV
Binding energy	7,811 ±0.0129 keV
Single-particle energy	2,983 ±2.485 keV
Neutron separation energy	7,746 ±8.005 keV
Q value for electron capture	785.3 ±3.004 keV
β⁻ decay energy	-2,892 ±6.893 keV
β⁻ decay energy with neutron	-10,120 ±5.276 keV
Magnetic dipole moment	4.14 ±0.04 μN

Point at nuclide Decay chain of Astatine-211

212AtAstatine-212

Classification	z: 85; n: 127; m: 212
Half life	0.314 ±3 s
Natural abundance	synthetic nuclide
Spin/parity	(1-)
Decay modes	α decay
Discovery	1954
Mass excess	-8,629 ±2.385 keV
Binding energy	7,798 ±0.0113 keV
Single-particle energy	3,484 ±2.163 keV
Neutron separation energy	5,052 ±3.071 keV
Q value for electron capture	1,741 ±2.649 keV
β⁻ decay energy	31.07 ±3.592 keV
β⁻ decay energy with neutron	-7,945 ±7.003 keV

Point at nuclide Decay chain of Astatine-212

213AtAstatine-213

Classification	z: 85; n: 128; m: 213
Half life	125 ±6 ns
Natural abundance	synthetic nuclide
Spin/parity	9/2-
Decay modes	α decay
Discovery	1968
Mass excess	-6,580 ±4.898 keV
Binding energy	7,790 ±0.023 keV
Single-particle energy	3,499 ±4.768 keV
Neutron separation energy	6,022 ±5.094 keV
Q value for electron capture	73.99 ±5.772 keV
β⁻ decay energy	-883.6 ±5.724 keV
β⁻ decay energy with neutron	-5,992 ±5.586 keV

Point at nuclide Decay chain of Astatine-213

214AtAstatine-214

Classification	z: 85; n: 129; m: 214
Half life	558 ±10 ns
Natural abundance	synthetic nuclide
Spin/parity	1-
Decay modes	α decay
Discovery	1949
Mass excess	-3,380 ±3.982 keV
Binding energy	7,776 ±0.0186 keV
Single-particle energy	4,014 ±4.662 keV
Neutron separation energy	4,870 ±6.01 keV
Q value for electron capture	1,090 ±4.237 keV
β⁻ decay energy	940.5 ±9.882 keV
β⁻ decay energy with neutron	-5,755 ±4.963 keV

Point at nuclide Decay chain of Astatine-214

215AtAstatine-215

Classification	z: 85; n: 130; m: 215
Half life	0.1 ±2 ms
Natural abundance	synthetic nuclide
Spin/parity	9/2-
Decay modes	α decay
Discovery	1944
Mass excess	-1,257 ±6.629 keV
Binding energy	7,767 ±0.0308 keV
Single-particle energy	4,075 ±6.656 keV
Neutron separation energy	5,948 ±7.62 keV
Q value for electron capture	-714.9 ±6.96 keV
β⁻ decay energy	-87.6 ±8.906 keV
β⁻ decay energy with neutron	-5,009 ±11.25 keV

Point at nuclide Decay chain of Astatine-215

216AtAstatine-216

Classification	z: 85; n: 131; m: 216
Half life	0.3 ±3 ms
Natural abundance	synthetic nuclide
Spin/parity	1-
Decay modes	α decay; β⁻ decay; electron capture (EC)
Discovery	1948
Mass excess	2,256 ±3.575 keV
Binding energy	7,753 ±0.0166 keV
Single-particle energy	4,490 ±3.989 keV
Neutron separation energy	4,558 ±7.417 keV
Q value for electron capture	474.3 ±4.009 keV
β⁻ decay energy	2,003 ±6.638 keV
β⁻ decay energy with neutron	-4,646 ±6.921 keV

Point at nuclide Decay chain of Astatine-216

217AtAstatine-217

Classification	z: 85; n: 132; m: 217
Half life	32.6 ±3 ms
Natural abundance	synthetic nuclide
Spin/parity	9/2-
Decay modes	α decay; β⁻ decay
Discovery	1947
Mass excess	4,394 ±5.001 keV
Binding energy	7,744 ±0.023 keV
Single-particle energy	4,676 ±5.111 keV
Neutron separation energy	5,933 ±6.028 keV
Q value for electron capture	-1,489 ±8.236 keV
β⁻ decay energy	736 ±6.15 keV
β⁻ decay energy with neutron	-3,931 ±7.573 keV
Magnetic dipole moment	3.8 ±0.2 μN
Electric quadrupole moment	-1.4 ±0.08 b

Point at nuclide Decay chain of Astatine-217

218AtAstatine-218

Classification	z: 85; n: 133; m: 218
Half life	1.28 ±6 s
Natural abundance	synthetic nuclide
Spin/parity	(3- 2-)
Decay modes	α decay; β⁻ decay
Discovery	1943
Mass excess	8,100 ±11.5 keV
Binding energy	7,729 ±0.0528 keV
Single-particle energy	5,072 ±13.19 keV
Neutron separation energy	4,365 ±12.48 keV
Q value for electron capture	-256.5 ±11.67 keV
β⁻ decay energy	2,882 ±11.6 keV
β⁻ decay energy with neutron	-3,630 ±12.13 keV
Electric quadrupole moment	0.6 ±0.4 b

Point at nuclide Decay chain of Astatine-218

219AtAstatine-219

Classification	z: 85; n: 134; m: 219
Half life	56 ±4 s
Natural abundance	synthetic nuclide
Spin/parity	(9/2-)
Decay modes	α decay; β⁻ decay
Discovery	1953
Mass excess	10,390 ±3.237 keV
Binding energy	7,720 ±0.0148 keV
Single-particle energy	5,249 ±3.513 keV
Neutron separation energy	5,775 ±11.91 keV
Q value for electron capture	-2,286 ±16.16 keV
β⁻ decay energy	1,566 ±2.947 keV
β⁻ decay energy with neutron	-2,893 ±3.912 keV
Electric quadrupole moment	-1.17 ±0.06 b

Point at nuclide Decay chain of Astatine-219

220AtAstatine-220

Classification	z: 85; n: 135; m: 220
Half life	3.71 ±4 m
Natural abundance	synthetic nuclide
Spin/parity	3
Decay modes	β⁻ decay; α decay
Discovery	1989
Mass excess	14,370 ±13.97 keV
Binding energy	7,703 ±0.0635 keV
Single-particle energy	5,594 ±21.11 keV
Neutron separation energy	4,091 ±14.34 keV
Q value for electron capture	-887.8 ±22.54 keV
β⁻ decay energy	3,763 ±14.08 keV
β⁻ decay energy with neutron	-2,525 ±14.12 keV

Point at nuclide Decay chain of Astatine-220

221AtAstatine-221

Classification	z: 85; n: 136; m: 221
Half life	2.3 ±2 m
Natural abundance	synthetic nuclide
Decay modes	β⁻ decay
Discovery	1989
Mass excess	16,780 ±13.97 keV
Binding energy	7,694 ±0.0632 keV
Single-particle energy	5,769 ±22.54 keV
Neutron separation energy	5,664 ±19.76 keV
Q value for electron capture	-2,992 ±24.03 keV
β⁻ decay energy	2,311 ±15.09 keV
β⁻ decay energy with neutron	-1,901 ±14.08 keV

Point at nuclide Decay chain of Astatine-221

222AtAstatine-222

Classification	z: 85; n: 137; m: 222
Half life	54 ±10 s
Natural abundance	synthetic nuclide
Decay modes	β⁻ decay
Discovery	1989
Mass excess	20,950 ±15.83 keV
Binding energy	7,677 ±0.0713 keV
Single-particle energy	6,109 ±25.16 keV
Neutron separation energy	3,901 ±21.11 keV
Q value for electron capture	-1,534 ±43.07 keV
β⁻ decay energy	4,581 ±15.95 keV
β⁻ decay energy with neutron	-1,590 ±16.83 keV

Point at nuclide Decay chain of Astatine-222

223AtAstatine-223

Classification	z: 85; n: 138; m: 223
Half life	50 ±7 s
Natural abundance	synthetic nuclide
Decay modes	β⁻ decay
Discovery	1989
Mass excess	23,420 ±13.97 keV
Binding energy	7,668 ±0.0627 keV
Single-particle energy	6,347 ±42.42 keV
Neutron separation energy	5,596 ±21.11 keV
Q value for electron capture	-3,651 ±196.4 keV
β⁻ decay energy	3,038 ±16.01 keV
β⁻ decay energy with neutron	-1,016 ±14.1 keV

Point at nuclide Decay chain of Astatine-223

224AtAstatine-224

Classification	z: 85; n: 139; m: 224
Half life	1.3 ± m
Natural abundance	synthetic nuclide
Decay modes	β⁻ decay
Discovery	2010
Mass excess	27,710 ±22.35 keV
Binding energy	7,650 ±0.0998 keV
Single-particle energy	6,656 ±197 keV
Neutron separation energy	3,788 ±26.36 keV
Q value for electron capture	-2,199 ±197.2 keV
β⁻ decay energy	5,265 ±24.41 keV
β⁻ decay energy with neutron	-750.1 ±23.68 keV

Point at nuclide Decay chain of Astatine-224

225AtAstatine-225

Classification	z: 85; n: 140; m: 225
Half life	300 ns
Natural abundance	synthetic nuclide
Decay modes	β⁻ decay
Discovery	2010
Mass excess	30,300 ±300 keV
Binding energy	7,641 ±1 keV
Single-particle energy	6,900 ±358 keV
Neutron separation energy	5,483 ±301 keV
Q value for electron capture	-4,280 ±424.2 keV
β⁻ decay energy	3,765 ±300 keV
β⁻ decay energy with neutron	-217 ±300 keV

Point at nuclide Decay chain of Astatine-225

226AtAstatine-226

Classification	z: 85; n: 141; m: 226
Half life	300 ns
Natural abundance	synthetic nuclide
Decay modes	β⁻ decay
Discovery	2010
Mass excess	34,660 ±300 keV
Binding energy	7,624 ±1 keV
Single-particle energy	7,209 ±424 keV
Neutron separation energy	3,711 ±424 keV
Q value for electron capture	-2,889 ±500.8 keV
β⁻ decay energy	5,913 ±300 keV
β⁻ decay energy with neutron	55 ±300 keV

Point at nuclide Decay chain of Astatine-226

227AtAstatine-227

Classification	z: 85; n: 142; m: 227
Half life	300 ns
Natural abundance	synthetic nuclide
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	2010
Mass excess	37,430 ±300 keV
Binding energy	7,613 ±1 keV
Single-particle energy	7,407 ±500 keV
Neutron separation energy	5,301 ±424 keV
Q value for electron capture	-4,851 ±500.8 keV
β⁻ decay energy	4,544 ±300 keV
β⁻ decay energy with neutron	612 ±300 keV

Point at nuclide Decay chain of Astatine-227

228AtAstatine-228

Classification	z: 85; n: 143; m: 228
Half life	300 ns
Natural abundance	synthetic nuclide
Decay modes	β⁻ decay
Discovery	2010
Mass excess	41,880 ±400 keV
Binding energy	7,596 ±2 keV
Single-particle energy	7,690 ±566 keV
Neutron separation energy	3,622 ±500 keV
β⁻ decay energy	6,637 ±400 keV
β⁻ decay energy with neutron	923 ±400 keV

Point at nuclide Decay chain of Astatine-228

229AtAstatine-229

Classification	z: 85; n: 144; m: 229
Half life	300 ns
Natural abundance	synthetic nuclide
Decay modes	β⁻ decay with neutron emission; β⁻ decay
Discovery	2010
Mass excess	44,890 ±400 keV
Binding energy	7,585 ±2 keV
Neutron separation energy	5,062 ±565 keV
β⁻ decay energy	5,527 ±400 keV
β⁻ decay energy with neutron	1,575 ±400 keV

Point at nuclide Decay chain of Astatine-229

Isotopes of Astatine

191AtAstatine-191ads_clickcall_splitdownload

192AtAstatine-192ads_clickcall_splitdownload

193AtAstatine-193ads_clickcall_splitdownload

194AtAstatine-194ads_clickcall_splitdownload

195AtAstatine-195ads_clickcall_splitdownload

196AtAstatine-196ads_clickcall_splitdownload

197AtAstatine-197ads_clickcall_splitdownload

198AtAstatine-198ads_clickcall_splitdownload

199AtAstatine-199ads_clickcall_splitdownload

200AtAstatine-200ads_clickcall_splitdownload

201AtAstatine-201ads_clickcall_splitdownload

202AtAstatine-202ads_clickcall_splitdownload

203AtAstatine-203ads_clickcall_splitdownload

204AtAstatine-204ads_clickcall_splitdownload

205AtAstatine-205ads_clickcall_splitdownload

206AtAstatine-206ads_clickcall_splitdownload

207AtAstatine-207ads_clickcall_splitdownload

208AtAstatine-208ads_clickcall_splitdownload

209AtAstatine-209ads_clickcall_splitdownload

210AtAstatine-210ads_clickcall_splitdownload

211AtAstatine-211ads_clickcall_splitdownload

212AtAstatine-212ads_clickcall_splitdownload

213AtAstatine-213ads_clickcall_splitdownload

214AtAstatine-214ads_clickcall_splitdownload

215AtAstatine-215ads_clickcall_splitdownload

216AtAstatine-216ads_clickcall_splitdownload

217AtAstatine-217ads_clickcall_splitdownload

218AtAstatine-218ads_clickcall_splitdownload

219AtAstatine-219ads_clickcall_splitdownload

220AtAstatine-220ads_clickcall_splitdownload

221AtAstatine-221ads_clickcall_splitdownload

222AtAstatine-222ads_clickcall_splitdownload

223AtAstatine-223ads_clickcall_splitdownload

224AtAstatine-224ads_clickcall_splitdownload

225AtAstatine-225ads_clickcall_splitdownload

226AtAstatine-226ads_clickcall_splitdownload

227AtAstatine-227ads_clickcall_splitdownload

228AtAstatine-228ads_clickcall_splitdownload

229AtAstatine-229ads_clickcall_splitdownload

191AtAstatine-191

192AtAstatine-192

193AtAstatine-193

194AtAstatine-194

195AtAstatine-195

196AtAstatine-196

197AtAstatine-197

198AtAstatine-198

199AtAstatine-199

200AtAstatine-200

201AtAstatine-201

202AtAstatine-202

203AtAstatine-203

204AtAstatine-204

205AtAstatine-205

206AtAstatine-206

207AtAstatine-207

208AtAstatine-208

209AtAstatine-209

210AtAstatine-210

211AtAstatine-211

212AtAstatine-212

213AtAstatine-213

214AtAstatine-214

215AtAstatine-215

216AtAstatine-216

217AtAstatine-217

218AtAstatine-218

219AtAstatine-219

220AtAstatine-220

221AtAstatine-221

222AtAstatine-222

223AtAstatine-223

224AtAstatine-224

225AtAstatine-225

226AtAstatine-226

227AtAstatine-227

228AtAstatine-228

229AtAstatine-229