the periodic table and its trends

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Across
  1. 2. where the number of protons are found
  2. 5. found in group 1
  3. 7. another name for the groups on the table
  4. 8. located on the right of the staircase
  5. 10. the rows across the table
  6. 12. found in group 18
  7. 14. the classification for elements that contains the element symbol
Down
  1. 1. all over the periodic table but mainly located left of the staircase
  2. 3. staircase of elements that aren't metal or non metal
  3. 4. contains the protons and neutrons
  4. 6. metals located in the middle of the table
  5. 9. the electrons in the outer shell of the element
  6. 11. the bonding that happens between 2 non metals
  7. 13. the columns on the table
  8. 15. the bonding that happens between a metal and non metal