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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!
Krypton-85
Beryllium-9
Uranium-235
Rubidium-85
Lead-208
Sodium-24
Thorium-229
Thulium-169
Carbon-14
Radium-226
Plutonium-238
Americium-241
Iridium-193
Polonium-210
Oxygen-15
Lead-202
Iodine-129
Copper-63
Nitrogen-14
Carbon-12
Iron-55
Gallium-71
Lithium-6
Phosphorus-31
Francium-223
Cesium-137
Thorium-230
Chlorine-35
Sulphur-35
Sodium-23
Potassium-41
Praseodymium-141
Hydrogen-2
Cobalt-60
Arsenic-75
Carbon-13
Fluorine-18
Nickel-63
Krypton-80
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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