Periodic Table Crossword

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Across
  1. 3. Used to treat bipolar disorder
  2. 6. my atomic number is 5+4
  3. 7. this element is silver grey metallic in colour
  4. 8. is a silvery-white metal that is soft enough to be cut with a knife with little force.
  5. 11. I start and end with the same letter
  6. 13. it is non-metallic element and the middle letter is R
  7. 16. my symbol is Na
  8. 17. is a yellow-green gas at room temperature.
Down
  1. 1. SI is my Symbol
  2. 2. It is abundant, multivalent, non-metallic
  3. 4. Lightest element in the periodic table
  4. 5. found in milk and it is good for bones
  5. 8. it starts with p
  6. 9. is the third-most abundant gas in the Earth's atmosphere, at 0.934%.
  7. 10. my atomic mass is 24.305
  8. 12. life giving gas
  9. 14. my cans are recyclable
  10. 15. 8 letter word starting with N and finishing with N
  11. 18. Starting with H and ending with M