Isotopes can be constituted-of-or-filled-with dubnium.Logical formLearned from5 sentences. Isotopes can be constituted-of-or-filled-with hafnium.Logical formLearned from5 sentences. Isotopes can be constituted-of-or-filled-with protactinium.Logical formLearned from5 sentences. An isotope can be constituted-of-or-filled-with thorium.Logical formLearned from5 sentences. Isotopes may undergo a decay.Logical formLearned from5 sentences. Isotopes can be with a number of neutrons.Logical formLearned from5 sentences. Isotopes can be constituted-of-or-filled-with potassium.Logical formLearned from5 sentences. An (isotope u-235) can be fissile.Logical formLearned from5 sentences. Isotopes may have half-lives.Logical formLearned from5 sentences. A (laser isotope separation) can be atomic.Logical formLearned from5 sentences. An isotope can be artificial.Logical formLearned from5 sentences. An isotope can be constituted-of-or-filled-with technetium.Logical formLearned from5 sentences. Isotopes may undergo a formation.Logical formLearned from5 sentences. Some isotopes can be with mass numbers.Logical formLearned from5 sentences. A stable isotope may have a half-life of some days.Logical formLearned from5 sentences.