Periodic table

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Across
  1. 2. an element with an atomic mass of 12.
  2. 3. an element that belongs to group 2 period 3.
  3. 5. element found inside the thermometer.
  4. 8. an element that belongs to group 1 period 3.
  5. 9. vertical columns in the periodic table.
  6. 10. element that has the lowest atomic number.
  7. 15. symbol F belongs to which element?.
  8. 16. an element that belongs to group 2 period 4.
Down
  1. 1. symbol I belongs to which element?.
  2. 4. element that is mostly used to make jewellery.
  3. 6. symbol cl belongs to which element?.
  4. 7. element that is mostly used as an electric conductor.
  5. 11. horizontal columns in the periodic table.
  6. 12. poor conductors of heat and electricity.
  7. 13. symbol Be belongs to which element?.
  8. 14. an element that is semi_metal and has an atomic number 14.