Periodic Table Creator

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Across
  1. 3. These elements surround the “staircase” of the periodic table
  2. 4. The ______ number is the same as the number of protons
  3. 7. All elements in a group contain the same number of what electron?
  4. 8. What does Rb stand for?
  5. 10. On the periodic table, what are the columns called?
  6. 13. _________ are negatively charged
  7. 15. The name of the metals in the middle of the periodic table
  8. 18. _____ gasses are to the right of the “staircase”
  9. 19. The letter in the middle of element boxes represents the element ______
Down
  1. 1. What is an ion called if it’s positively charged?
  2. 2. The “principle energy number” is also known as the _________ number?
  3. 4. What is an ion called if it’s negatively charged?
  4. 5. protons and neutrons equal what?
  5. 6. __________ Table of the Elements
  6. 9. s, d, p, and f are all names for what?
  7. 11. The ______ rule says that all elements in order to become energetically stable, desire 8 valence electrons
  8. 12. _______ are positively charged
  9. 14. What does Co stand for?
  10. 16. The mass number found in element boxes is the _______ atomic mass
  11. 17. Na represents what element?