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Isotopes: At-193 At-194 At-195 At-196 At-197 At-198 At-199 At-200 At-201 At-202 At-203 At-204 At-205 At-206 At-207 At-208 At-209 At-210 At-211 At-212 At-213 At-214 At-215 At-216 At-217 At-218 At-219 At-220 At-221 At-222 At-223 For information on elements, we recommend ![]() |