Th-232 ( 100% , 1.405E10 ) Isotopes: Th-210 Th-211 Th-212 Th-213 Th-214 Th-215 Th-216 Th-217 Th-218 Th-219 Th-220 Th-221 Th-222 Th-223 Th-224 Th-225 Th-226 Th-227 Th-228 Th-229 Th-230 Th-231 Th-233 Th-234 Th-235 Th-236 Th-237 Th-238 For information on elements, we recommend . |