The Periodic Table and its Trends

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Across
  1. 4. a negative charge
  2. 6. do not form bonds in group 8 and have 8 valence electrons
  3. 8. an element that have some property of metal and nonmetal combined
  4. 10. group 2 and have 2 valence electrons
  5. 11. horizontal row in a periodic table
  6. 12. the number of protons in one atoms
  7. 13. located in group 7 contain nonmetal and have 7 valence electrons
  8. 15. A bond formed between two non metal elements
Down
  1. 1. A bond formed between two metal element
  2. 2. A positive charge
  3. 3. elements that does not conduct electricity and gas at a room temperature
  4. 5. the electrons in the outer most shell
  5. 7. elements or substance that very good in conduct electricity
  6. 9. group 1, 1 valence electrons in outer level and very reactive, shiny,silver
  7. 14. vertical column in the periodic table