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Lanthanides And Actinides

Chemical symbols and full element names work
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Last updated: April 2, 2026
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First submittedApril 2, 2026
Times taken6
Average score90.0%
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Atomic Number
Element
57
Lanthanum
58
Cerium
59
Praseodymium
60
Neodymium
61
Promethium
62
Samarium
63
Europium
64
Gadolinium
65
Terbium
66
Dysprosium
67
Holmium
68
Erbium
69
Thulium
70
Ytterbium
71
Lutetium
Atomic Number
Element
89
Actinium
90
Thorium
91
Protactinium
92
Uranium
93
Neptunium
94
Plutonium
95
Americium
96
Curium
97
Berkelium
98
Californium
99
Einsteinium
100
Fermium
101
Mendelevium
102
Nobelium
103
Lawrencium
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