Periodic Table Trends

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Across
  1. 1. The lightest noble gas.
  2. 3. The element with an electron configuration ending in 3p⁵.
  3. 4. The element with the highest first ionization energy.
  4. 5. The transition metal in group 11 used in wiring.
  5. 7. The element used in nuclear fission fuel rods.
  6. 13. The most electronegative element.
  7. 14. The only liquid metal at room temperature.
  8. 17. The only nonmetal on the left side of the periodic table
  9. 19. Trend that increases up and to the right on the table.
  10. 20. The element that defines organic chemistry.
  11. 21. Element symbolized as “W”.
  12. 22. The trend that increases down a group and decreases across a period.
Down
  1. 2. The trend describing how tightly an atom holds its valence electrons.
  2. 6. Period 4 element that forms a +2 ion with a filled 3d subshell.
  3. 8. The metalloid used in computer chips.
  4. 9. The least reactive group of elements.
  5. 10. two The group number for the alkaline earth metals.
  6. 11. Element with atomic number 82.
  7. 12. The halogen in period 5.
  8. 13. The most reactive alkali metal.
  9. 15. Group with full outer s and p orbitals.
  10. 16. The first transition metal.
  11. 18. The horizontal rows on the periodic table are called ____.