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Sudden Death - Which isotopes aren't radioactive?
Touch only the stable isotopes - if you choose a radioactive one, you will get Acute Radiation Syndrome, which will result in Sudden Death!
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Last updated: January 8, 2025
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| First submitted | January 8, 2025 |
| Times taken | 33 |
| Average score | 15.0% | Report this quiz | Report |
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Sudden Death. Clicking a wrong answer ends the quiz!
Thorium-230
Krypton-80
Radium-226
Cesium-137
Chlorine-35
Carbon-12
Phosphorus-31
Carbon-13
Oxygen-15
Thorium-229
Sodium-24
Iodine-129
Potassium-41
Lead-202
Sulphur-35
Americium-241
Thulium-169
Rubidium-85
Nickel-63
Praseodymium-141
Iron-55
Lead-208
Gallium-71
Arsenic-75
Iridium-193
Nitrogen-14
Polonium-210
Beryllium-9
Carbon-14
Copper-63
Francium-223
Krypton-85
Fluorine-18
Plutonium-238
Hydrogen-2
Lithium-6
Cobalt-60
Sodium-23
Uranium-235
Phosphorus-32
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2 Comments
Junseong
+2
Level 73
Jan 8, 2025
Francium-223 is radioactive. In fact, every isotope of francium is radioactive.
PigeonsUnited
+1
Level 44
Jan 9, 2025
will change now! it is the most stable of all of francium's isotopes.
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