periodic table and it trends

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Across
  1. 5. what group is seventeen
  2. 7. how many valence electrons does hydrogen have
  3. 11. The first group in the periodic table
  4. 12. the vertical rows on the periodic table
  5. 15. how many valence electrons does carbon have
Down
  1. 1. On the right side of the staircase
  2. 2. how many valence electrons does sulfur have
  3. 3. what group is two
  4. 4. The last group in a periodic table
  5. 6. On the left side of the staircase
  6. 8. how many valence electrons does radium have
  7. 9. how many valence electrons does iodine have
  8. 10. The horizontal rows in the periodic table
  9. 13. how many valence electrons does cesium have
  10. 14. how many valence electrons does calcium have