An alpha particle has the same structure as the nucleus of a helium atom (specifically helium‑4).

Quick Scoop

  • An alpha particle is made of:
    • 2 protons
    • 2 neutrons
  • This is exactly the same composition as a helium‑4 nucleus, just without any electrons.

So, the element whose nucleus has the same structure as an alpha particle is helium.

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