228) (various radio . elements) elements) elements) elements) elements) elements) elements) 86. Nt 222 87. 88. Ra 226 89. Ac 226 90. Th 232-15 91. 92. U 238-2 (Fh Em 220 (Th X 224 (Ms Th II 228) (various radio (various radio UX2 (U Il 234) Ac Em 218) Ac X 222) clements) 1. Iydrogen (For latest Isotope