Se-74 ( 0.89% ) Se-76 ( 9.36% ) Se-77 ( 7.63% ) Se-78 ( 23.78% ) Se-80 ( 49.61% ) Se-82 ( 8.73% , 1.08E+20 ) Isotopes: Se-65 Se-66 Se-67 Se-68 Se-69 Se-70 Se-71 Se-72 Se-73 Se-75 Se-79 Se-81 Se-83 Se-84 Se-85 Se-86 Se-87 Se-88 Se-89 Se-90 Se-91 Se-92 For information on elements, we recommend ![]() |