90 91 92 93 94 95 96 97 98 99 100 101 102 103 Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr 7 Actinides 232.0 231.0 238.0 (259.1) (260.1) (237.1) (243.1) (247.1) (247.1) (251.1) (252.1) (257.1) (258.1) (244.1)
7 Actinides 90 Th 232.0 91 Pa 231.0 92 U 238.0 93 Np (237.1) 94 Pu (244.1) 95 Am (243.1) 96 Cm (247.1) 97 Bk (247.1) 98 Cf (251.1) 99 Es (252.1) 100 Fm (257.1) 101 Md (258.1) 102 No (259.1) 103 Lr (260.1)
44th_International_Chemistry_Olympiad-_Preparatory_Problems.docx