Periodic Table

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Across
  1. 3. Elements in groups 3–12 with variable charges
  2. 8. Group 2 elements that are reactive but less than alkali metals
  3. 9. Group 1 elements that are highly reactive
  4. 10. Elements lacking metallic properties
Down
  1. 1. Group 17 elements that are very reactive nonmetals
  2. 2. Metals found after the transition metals
  3. 4. Heavy, often radioactive elements with atomic numbers 89–103
  4. 5. Group 18 elements that are unreactive
  5. 6. Elements with properties of both metals and nonmetals
  6. 7. Rare earth metals with atomic numbers 57–71