Step-by-step explanation:
Zn 30 30 35 30 65
Mo 42 42 56 42 98
Lu 71 71 105 71 176
Am 95 95 148 95 243
Cr 24 24 27 24 53
Bi 83 83 126 83 209
Th 90 90 142 90 232
Md 101 101 158 101 259
Se 36 36 44 36 80
Zr 40 40 51 40 91
9.5m questions
12.2m answers