Periodic Table Crossword

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Across
  1. 3. Columns of the Periodic Table; all elements will have the same number of valence electrons
  2. 7. A metal group with all 1 valence electrons; most reactive group of metals
  3. 9. Describes nonmetals; hard and rigid
  4. 11. all to the right side of the stair step line, besides hydrogen; most gasses
  5. 12. __ Electrons the electrons in the outer most orbital
  6. 14. The kind of gasses found in group 18; unreactive
  7. 15. Extremely reactive in element form; group 17
  8. 16. A bond that is formed when a metal bonds with a metal
  9. 18. Indicates the number of electrons lost of gained
  10. 19. The scientist who the model, that shows elections orbit around a nucleus, is named after
  11. 20. Rows on the Periodic Table; all elements will have the same number of electron rings
Down
  1. 1. Describes metal; the ability to be hammered into sheets
  2. 2. The bond formed from when two nonmetals bond
  3. 4. Atoms of the same element that have different numbers of neutrons
  4. 5. A metal group that is not found in element form in nature
  5. 6. A bond that is formed when metals are bonded with non metals
  6. 8. An atom that is positively charged
  7. 10. __ Number the sum of protons and neutrons
  8. 13. Found to the left of the stair step line; shiny and good conductors
  9. 17. __ number; number of protons; determines the type of element