Periodic Table Creator

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