periodic table parts

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Across
  1. 7. I am in group 15 row 5
  2. 10. My atomic number is 79.
  3. 11. I member of group 13 and the most abundant metal in the earth's crust.
  4. 12. I am the only halogen that is a liquid.
  5. 14. I am an alkaline earth metal and used for fireworks.
  6. 15. I am a gas with a mass of 19.00
  7. 19. I make up 78% of the air and I am found in the 15th group.
  8. 20. I am a transition metal with 25 electrons.
  9. 23. I am the second most abundant element in the earth's crust,used in computer ships and have 14 neutrons.
Down
  1. 1. I have 20 neutrons and I am found in your teeth and bones.
  2. 2. I am a halogen in row 3
  3. 3. I am a gas with 8 protons and 8 neutrons.
  4. 4. I am a silvery white metal,alkali metal and used to make salt.
  5. 5. I am the first element in the fourth period,help with muscles and found in bananas.
  6. 6. I am not really an alkali metal, but since I have one proton I act more like a nonmetal.
  7. 8. I have 2 electrons in the first energy level, 8 electrons in the second and 6 in the third.
  8. 9. I have 26 protons.
  9. 13. I am a halogen with 53 protons.
  10. 16. I am a metal that is liquid at room temperature.
  11. 17. I am a transition metal with 30 electrons and useful for your immune system.
  12. 18. I am the head of the carbon family known as the "basis of life"
  13. 21. My atomic number is 47 and I am use in making photographic film.
  14. 22. I am a member of group 15 with 16 neutrons.
  15. 24. I am a member of group 14,mistaken for the end of your pencil and unfortunately sometimes found in water.