Periodic Table

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12345678910111213141516171819
Across
  1. 2. soft, reactive metals in group
  2. 7. is 1/2 the distance from the nucleus of an atom to the nucleus of another atom
  3. 10. element with the largest atomic radius
  4. 12. elements with qualities of metals and nonmetals
  5. 13. group of unreactive nonmetals
  6. 14. group of reactive gasses
  7. 15. positive ion
  8. 16. negative ion
  9. 18. how strongly an atom attracts electrons
  10. 19. ability of a metal to be formed and shaped
Down
  1. 1. ______ electrons are found in an atom's outer shell
  2. 3. energy it takes to remove an electron from an atom
  3. 4. iron, gold, and copper all belong to this group
  4. 5. scientist who discovered the atomic number for all known elements
  5. 6. column on periodic table
  6. 8. scientist responsible for the periodic table
  7. 9. row on periodic table
  8. 11. group 2 on the periodic table
  9. 17. scientist who organized elements into triads