Periodic Table

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Across
  1. 2. The electrons on the outermost energy level of an atom are known as __________ electrons
  2. 6. The first artificial element ever made
  3. 8. Negatively charged particle of an atom
  4. 9. The number of elements on the Periodic Table
  5. 11. An element found in diamonds
  6. 15. Most of the nonmetals are located on the _______ side of the Periodic Table
  7. 17. The majority of the elements on the Periodic Table are ______________
  8. 18. Element with 10 protons
  9. 19. Element with 2 electrons in the 1st energy level, 8 in the 2nd, and 1 in the 3rd.
  10. 20. The element in the 3rd period and 13th group
Down
  1. 1. Created the first version of the Periodic Table
  2. 3. The number of periods on the Periodic Table
  3. 4. Element in period 2 and group 1 of the Periodic Table
  4. 5. Symbol Fe
  5. 7. 1st element on the Periodic Table
  6. 10. Horizontal rows on the Periodic Table
  7. 12. The most abundant element on Earth
  8. 13. Atomic number represents the number of ________
  9. 14. Atomic mass is the number of protons + ________
  10. 16. Vertical columns on the Periodic Table