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Radioactive elements

Name the elements of the periodic table that emit radiation.
Grey elements occur naturally, even if only trace amounts
Quiz by KevinTheCat
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Last updated: June 13, 2023
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First submittedFebruary 22, 2022
Times taken56
Average score39.5%
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Answer
43
Technetium
61
Promethium
83
Bismuth
84
Polonium
85
Astatine
86
Radon
87
Francium
88
Radium
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
104
Rutherfordium
105
Dubnium
106
Seaborgium
107
Bohrium
108
Hassium
109
Meitnerium
110
Darmstadtium
111
Roentgenium
112
Copernicium
113
Nihonium
114
Flerovium
115
Moscovium
116
Livermorium
117
Tennessine
118
Oganesson
2 Comments
NunoPP03
+1
Level 69
Dec 27, 2023
I don't think Bismuth is still considered a radioactive element.
KevinTheCat
+1
Level 67
Dec 27, 2023
From Wikipedia: "Bismuth was long considered the element with the highest atomic mass whose nuclei do not spontaneously decay. However, in 2003 it was discovered to be extremely weakly radioactive."
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