Electrons and the Periodic Table

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Across
  1. 1. The atomic number of magnesium.
  2. 5. The element that forms a +2 ion in period 4.
  3. 7. This element has the electron configuration [Ar] 4s2 3d8 and rhymes with pickle
  4. 9. The number of valence electrons that Krypton has.
  5. 10. The alkali metal in period 7
  6. 11. The element with the most protons in period 6.
  7. 12. vertical column on the periodic table
  8. 13. The alkali earth metal in period 6.
  9. 14. horizontal row on the periodic table
  10. 17. The noble gas in period 5.
  11. 18. The halogen in period 4.
Down
  1. 2. The type of electron in the outer most energy level of an atom.
  2. 3. The element with 3 electrons in 2p
  3. 4. The element with an atomic number of 30.
  4. 5. The element in period 4 and group 6.
  5. 6. The element with only 1 electron in 2s.
  6. 8. The element with the atomic number of 82.
  7. 13. The metalloid in period 2.
  8. 15. This element is in period 2 and group 16
  9. 16. The element with 3 valence electrons in period 3.