Periodic Table Crossword Puzzle

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Across
  1. 4. It is applied to the skin for skin inflammation and to kill germs and facilitate wound healing.
  2. 5. Used in batteries and hybrid vehicles.
  3. 7. Non-metal that has 34 atomic number.
  4. 8. The first element at Period 4 in the group 9.
  5. 11. The ninth most abundant element on Earth.
  6. 13. Metal in group 15.
  7. 15. It has ability to resist corrosion.
  8. 16. Ferrum is my Latin name.
  9. 17. To galvanise other metals, such as iron, to prevent rusting.
  10. 19. Humans and animals need me for breathing.
  11. 20. The symbol is Au in the periodic table.
Down
  1. 1. Exists in three important allotropic forms (diamond, graphite & fullerenes).
  2. 2. The least reactive in group 1.
  3. 3. Has 25 atomic number.
  4. 6. In the group 2, it does not react with water.
  5. 9. Important for bone health.
  6. 10. Metalloids in group 14.
  7. 12. Has 9 atomic number.
  8. 14. The symbol is W in the periodic table.
  9. 18. The lightest element in the periodic table.