Chemistry4Life

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Across
  1. 2. horizontal line in periodic table
  2. 3. electron the name of electrons on the last shell of an atom
  3. 5. elements from group 17
  4. 6. vertical column in periodic table
  5. 8. A table containing elements
Down
  1. 1. founder of periodic table
  2. 4. an inert gas
  3. 5. first element in the periodic table
  4. 7. positive charge in the nucleus
  5. 8. chemical formula of iron