The Periodic Table and its Trends

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Across
  1. 3. It classifies elements based on the number of valence electrons it has, and the number of shells it has.
  2. 9. These elements are located between groups three through twelve.
  3. 10. Two or more of these elements form covalent bonds.
  4. 12. All elements want to try to have this by gaining or losing electrons.
  5. 13. As the number of valence electrons decreases this increases.
  6. 14. These elements have a full outer shell.
Down
  1. 1. These elements have two valence electrons in their outer shell.
  2. 2. These elements are extremely reactive and contain only nonmetals.
  3. 4. This feature of the Periodic Table is the amount of protons that an element has.
  4. 5. Columns of the Periodic Table
  5. 6. These elements have features of both metals and nonmetals.
  6. 7. Rows of the Periodic Table
  7. 8. These elements are great conductors of electricity when dissolved in water.
  8. 11. The outer most electrons of an element.
  9. 15. These elements are extremely reactive and contain only metals.