Periodic table Crossword

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Across
  1. 3. K
  2. 5. 118 neutrons
  3. 6. particles in the nucleus with a positive charge
  4. 7. there are 7 of these on the periodic table
  5. 9. 2 or more elements chemically bonded
  6. 12. 10 neutrons
  7. 14. there are 17 of these on the periodic table
  8. 16. the positively charged center of the atom
  9. 17. Rows
  10. 20. mass number of 88
Down
  1. 1. atom with 2 neutrons and 1 proton
  2. 2. columns
  3. 4. smallest particle of an element
  4. 8. particles with a negative charge
  5. 10. shiny, conductors, malleable,ductile, solid
  6. 11. mass number of 31
  7. 13. particles in a nucleus that are electrically neutral
  8. 15. atomic number of 10
  9. 18. Atomic number of 8
  10. 19. atom with 6 protons and 8 neutrons