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Sm-144 ( 3.1% ) Sm-147 ( 15.0% , 1.06E+11 ) Sm-148 ( 11.3% , 7E+15 Y ) Sm-149 ( 13.8% , 2E+15 Y ) Sm-150 ( 7.4% ) Sm-152 ( 26.7% ) Sm-154 ( 22.7% ) Isotopes: Sm-130 Sm-131 Sm-132 Sm-133 Sm-134 Sm-135 Sm-136 Sm-137 Sm-138 Sm-139 Sm-140 Sm-141 Sm-142 Sm-143 Sm-145 Sm-146 Sm-151 Sm-153 Sm-155 Sm-156 Sm-157 Sm-158 Sm-159 Sm-160 Sm-161 Sm-162 Sm-163 Sm-164 Sm-165 For information on elements, we recommend  . |