Atomic Structure

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Across
  1. 1. subatomic particle without a charge
  2. 5. atoms of the same element with different masses
  3. 8. center of an atom
  4. 11. the number unique to each element on the periodic table, tells you protons
  5. 13. color of light with large wavelength
  6. 18. color of light with small wavelength
  7. 19. atom with a charge
  8. 20. charge of an anion
  9. 21. electrons involved in bonding (outer electrons)
  10. 22. total number of protons and neutrons
  11. 24. negatively charged subatomic particle
  12. 25. he used the gold foil experiment to find that atoms were mostly empty space
  13. 26. number of neutrons in an atom with 9 protons and a mass of 16
  14. 27. letters for the elements on the periodic table
Down
  1. 2. type of radiation with low energy
  2. 3. average atomic mass of naturally occurring isotopes
  3. 4. mass number of an atom with 7protons, 7 electrons, and 8 neutrons
  4. 6. positively charged subatomic particle
  5. 7. charge of a cation
  6. 9. if the protons and electrons are uneven, you have this
  7. 10. type of radiation with high energy
  8. 12. atomic number of fluorine
  9. 14. 1-7, notated by the period numbers
  10. 15. smallest form of matter that retains the properties of an element
  11. 16. substances that make up the periodic table
  12. 17. not negative or positive
  13. 23. his atomic model showed electrons on rings around the nucleus