64-Gd
 basic
64-gadolinium
Naturally occuring isotopes:
Gd-152   ( 0.20% , 1.08E14 ) Gd-154   ( 2.18% ) Gd-155   ( 14.80% ) Gd-156   ( 20.47% ) Gd-157   ( 15.65% ) Gd-158   ( 24.84% ) Gd-160   ( 21.86% )
Isotopes:
Gd-136   Gd-137   Gd-138   Gd-139   Gd-140   Gd-141   Gd-142   Gd-143   Gd-144   Gd-145   Gd-146   Gd-147   Gd-148   Gd-149   Gd-150   Gd-151   Gd-153   Gd-159   Gd-161   Gd-162   Gd-163   Gd-164   Gd-165   Gd-166   Gd-167   Gd-168   Gd-169  
For information on elements, we recommend .