Kimyo - Параграф: 3, тест №21

21. (v6-107-20) Es -> Cm + xa + y_p + 9hv Ushbu yadro reaksiyasi asosida 12,54 mg eynshteyniy izotopi parchalanganda 14,86-1019 dona elektron ajralsa, reaksiya natijasida olingan kyuriy izotopining nisbiy atom massasini korsating. A)235 B)237 C)240
D) 234