I do Crosswords Periodically

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Across
  1. 6. Metals found in Groups 3-12 on the Periodic Table
  2. 8. Highly reactive metals found in Group 1 of the Periodic Table
  3. 11. Gasses found in Group 18 on the Periodic Table with a full valence shell
  4. 12. This element is found in Group 2 and Period 3
  5. 14. Electrons located in the outermost energy level of an atom
  6. 16. Repeating patterns in the periodic table are called Periodic _____
  7. 17. The scientist who created the first periodic table based on the properties of elements
  8. 18. The columns on the periodic table.
  9. 19. A group of elements on the periodic table with similar physical and chemical properties are called Periodic Table ____
Down
  1. 1. The horizontal rows on the Periodic Table
  2. 2. This element is found in Group 1 and Period 2
  3. 3. This element is in the Group 1 and Period 3
  4. 4. The earth metals that make up Group 2 of the Periodic Table
  5. 5. This element is in Group 18 and Period 6
  6. 7. The distance from the center of the nucleus to the outermost energy level of an atom is called _____ Radius
  7. 9. Potassium (K) is a metal, metalloid, or nonmetal?
  8. 10. The gasses found in Group 17 on the Periodic Table
  9. 13. Helium is metal, metalloid, or nonmetal?
  10. 15. The areas around the nucleus that contain electrons are typically called ____ levels
  11. 20. An atom that has lost or gained one or more electrons