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PT/Chem: Radioactive Elements - 21 Random

Type the Element name for the given symbol.
The 37 radioactive elements are #43, #61, and #84 thru #118.
Only four exist naturally on earth - Radon, Radium, Thorium, & Uranium.
See also PT/Chem: Elements 1-95 and PT/Chem: Symbols 1-15
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Sonmi42
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Last updated: March 13, 2026
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First submittedApril 18, 2024
Times taken143
Average score57.1%
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Atomic
#
Sym
Element
94
Pu
Plutonium
100
Fm
Fermium
98
Cf
Californium
86
Rn
Radon
95
Am
Americium
107
Bh
Bohrium
96
Cm
Curium
Atomic
#
Sym
Element
110
Ds
Darmstadtium
99
Es
Einsteinium
43
Tc
Technetium
91
Pa
Protactinium
102
No
Nobelium
89
Ac
Actinium
90
Th
Thorium
Atomic
#
Sym
Element
87
Fr
Francium
106
Sg
Seaborgium
97
Bk
Berkelium
113
Nh
Nihonium
93
Np
Neptunium
88
Ra
Radium
103
Lr
Lawrencium
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