Periodic Table Crossword

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Across
  1. 3. _________ is the horizontal rows on the periodic table
  2. 4. _________created the modern day periodic table
  3. 7. _________ is the only metal liquid at room temperature
  4. 8. _________ gasses are in group 0
  5. 9. _________ is one of the most valuable and precious metals
Down
  1. 1. _________ metals are the most reactive group of metals
  2. 2. _________ is the vertical column on the periodic table
  3. 5. _________ is the 12th element on the periodic table
  4. 6. _________ is fe on the periodic table