Periodic table vocabulary

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Across
  1. 3. can be found in the nucleus of the atom
  2. 6. negatively charged subatomic particle
  3. 8. vertical columns in the periodic table
  4. 9. a chart that lists elements
  5. 10. the letter or pair of letters that stand for an element in a periodic table square
Down
  1. 1. the number at the top of each square in the periodic table
  2. 2. the weight of an atom of the element
  3. 4. the center of an atom; where the neutron and proton is located
  4. 5. subatomic particle with neutral charge
  5. 7. horizontal row on the periodic table chart