Isotopes of Astatine (At)

Symbol Mass Number Relative Atomic Mass Isotopic Composition
193At 193 192.999840(60)
194At 194 193.99873(20)
195At 195 194.996268(10)
196At 196 195.995790(60)
197At 197 196.993190(50)
198At 198 197.992840(50)
199At 199 198.990530(50)
200At 200 199.990351(26)
201At 201 200.988417(9)
202At 202 201.988630(30)
203At 203 202.986942(13)
204At 204 203.987251(26)
205At 205 204.986074(16)
206At 206 205.986667(22)
207At 207 206.985784(23)
208At 208 207.986590(28)
209At 209 208.986173(8)
210At 210 209.987148(8)
211At 211 210.9874963(30)
212At 212 211.990745(8)
213At 213 212.992937(5)
214At 214 213.996372(5)
215At 215 214.998653(7)
216At 216 216.002423(4)
217At 217 217.004719(5)
218At 218 218.008694(12)
219At 219 219.011162(4)
220At 220 220.015410(60)
221At 221 221.01805(21)#
222At 222 222.02233(32)#
223At 223 223.02519(43)#

Legend

Mass Number
Relative Atomic Mass
Isotopic Composition
Standard Atomic Weight
At: [210]