Periodic table Trends

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Across
  1. 1. all non metals and have seven valence electrons
  2. 5. contains one metalloid and four metals and contain three valence electrons
  3. 6. the energy required to remove an electron from an atom
  4. 10. vertical columns that tell the number of outer shell electrons each element has
  5. 11. A measure of the ability of an atom in a chemical compound to attract electrons
  6. 12. Elements found on the left and middle portions of the periodic table and are generally have luster and malleable
  7. 14. positively charged ions that have lost one or more electrons
  8. 15. slightly less reactive than alkali metals and they always have two valence electrons
  9. 16. Half the distance between nuclei in covalently bonded diatomic molecule
Down
  1. 2. Elements found on the right side of the periodic table and tend to be dull and brittle
  2. 3. elements in the center of the periodic table and have a variable number of valence electrons
  3. 4. contains one nonmetal and two metalloids and two metals
  4. 7. most stable elements in the periodic table and have a full valence electrons
  5. 8. negatively charged ions that have gained one or more electrons
  6. 9. Horizontal rows that tell the number of energy levels, orbitals or shells each element in that period have
  7. 12. elements with the properties of both metals and non metals
  8. 13. metals that are extremely reactive and are never found in nature in their pure form and they have one valence electron