1. Zirconium
  2. Uranium
  3. Molybdenum
  4. Vanadium
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Option 2 : Uranium

  • Uranium, a naturally occurring heavy metal, comes as uranium 238 or 235.
  • Both are radioactive and will decay into other elements, but only the latter can be forcibly split when neutrons are fired at it. This is the basis of a nuclear bomb.
  • When an atom breaks apart, it gives out energy and more neutrons, which can then split other atoms. Get enough atoms splitting and you have the chain reaction needed for a bomb blast.
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