Periodic Table Crossword Puzzle

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Across
  1. 2. The columns of the periodic table shows valence electrons.
  2. 3. Something that is malleable.
  3. 5. The rows of the periodic table shows the amount of shells.
  4. 7. Oxygen falls in this category.
  5. 8. Determines the elements identity.
Down
  1. 1. Something inside the nucleus that has no electric charge.
  2. 4. Something that is shiny or dull.
  3. 6. Something that is not in nucleus.