Metallic bonds and Radioactive Decay

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Across
  1. 3. positively charged ion
  2. 5. attraction between delocalized electrons and metallic cations
  3. 7. electromagnetic waves that are usually emitted after alpha or beta radiation emission
  4. 8. radiation with the greatest penetrability and most harmful
  5. 10. ability to be formed into sheets
  6. 11. electrons that don’t belong to a single atom or bond
  7. 12. ability to be drawn into wire
Down
  1. 1. negatively charged ion
  2. 2. atoms of a metal are somewhat fixed in position in a crystal lattice, while outer electrons move freely throughout the lattice
  3. 4. particle composed of two protons and two neutrons
  4. 6. particle that represents an emitted electron (-1 charge)
  5. 9. radiation with the lowest penetrability and the lowest ability to cause harm