Pr-141 ( 100% )
Isotopes:
Pr-121 Pr-122 Pr-123 Pr-124 Pr-125 Pr-126 Pr-127 Pr-128 Pr-129 Pr-130 Pr-131 Pr-132 Pr-133 Pr-134 Pr-135 Pr-136 Pr-137 Pr-138 Pr-139 Pr-140 Pr-142 Pr-143 Pr-144 Pr-145 Pr-146 Pr-147 Pr-148 Pr-149 Pr-150 Pr-151 Pr-152 Pr-153 Pr-154 Pr-155 Pr-156 Pr-157 Pr-158 Pr-159
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