2022 Hainan Question 2 Single-choice Differentiating 2022_海南卷 (物理) 2. 下列属于β衰变的是（ ） A. 238 234 492 90 2U Th He® +B. 14 4 17 17 2 8 1N He O H+ ® +C. 234 234 090 91 1Th Pa e-® +D. 235 1 144 89 192 0 56 36 0U n Ba Kr 3 n+ ® + + Answer keyC ☆ SaveCan't do it, show the explanation查看原卷 →