Elementlarning yarimlanish davri bo'lmaydi, elementlarning izotoplari bor. Barqaror izotoplarning yarimlanish davri cheksiz. Elementlarning ba'zi izotoplari, masalan, cho'g'on (Sn) izotoplari radioaktiv bo'lishi mumkin, ammo ularning kutilgan yarimlanish davri juda katta, shuning uchun hali hech qanday parchalanish kuzatilmagan. Yarimlanish davri koinot yoshiga qaraganda ko'proq bo'lgan izotoplar barcha amaliy maqsadlar uchun barqaror deb hisoblanishi mumkin.
spam fails_task lang_mismatch pii not_appropriate hate_speech sexual_content quality toxicity humor helpfulness creativity violence