Periodic table crossword

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Across
  1. 3. The surname of the man the organised the periodic table
  2. 4. A group of nonmetals in Group 7 of the periodic table (7 letters)
  3. 6. the name for the element with the symbol “Na”
  4. 7. The horizontal rows in the periodic table (6 letters)
  5. 9. the name for the gases in group 0
Down
  1. 1. The name for the element with the symbol "O"
  2. 2. The elements found in Group 1 of the periodic table
  3. 5. A vertical column in the periodic table (5 letters)
  4. 8. The name for the element with the symbol "Fe"