periodic table

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Across
  1. 1. Silvery and used to make salt
  2. 4. Carbon family, not in pencil
  3. 6. 78% of air
  4. 9. 26 protons
  5. 10. 8 protons 8 neutrons
  6. 11. Carbon family, fifth period
  7. 13. Member of boron family most abundant in earth crust
  8. 15. 47 and used to make film
Down
  1. 1. 14 neutrons 2nd most abundant metal
  2. 2. Halide family atomic number of 53
  3. 3. Not alkali metal, 1 electron so I behave like them
  4. 5. First element in fourth period used in fertiliazer
  5. 7. Metal with 28 electromsm
  6. 8. 79
  7. 12. Transition metal 30 electrons used for paint
  8. 14. Metal liquid at room temperature