Periodic Table Puzzle

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Across
  1. 3. 2nd most abundant in Earth's crust, 14 neutrons
  2. 4. transition metal with 25 electrons
  3. 8. carbon family-often mistaken for end of your pencil
  4. 10. atomic number 47-used to make photographic film
  5. 12. halogen with atomic number of 53
  6. 13. in the Carbon family in the 5th period
  7. 14. silvery white metal used to make salt
  8. 18. metal and liquid at room temperature-poisonous
  9. 19. make up 78% of air, in 15th group
  10. 21. noble gas with 2 electrons
  11. 23. 26 protons
  12. 24. not an alkali metal, but have 1 electron
  13. 25. in Nitrogen family with 16 neutrons
  14. 26. halogen that is a liquid
Down
  1. 1. head of carbon family, basis of life
  2. 2. 16 neutrons, oxygen family
  3. 5. atomic number 79
  4. 6. 20 neutrons found in your teeth and bones
  5. 7. gas with a mass number of 19
  6. 9. most abundant metal in Earth crust- Boron family
  7. 11. transition metal,30 electrons,used in making paint
  8. 15. gas with 8 protons and 8 neutrons
  9. 16. 1st element in 4th period used in fertilizer
  10. 17. alkaline Earth metal, used in fireworks
  11. 20. 28 electrons. I am a metal.
  12. 22. atomic mass is 35.45