Periodic Table

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Across
  1. 1. The ______ Number tells you the number of protons and neutrons in an atom
  2. 4. The group of metals with no group number (_____ metals)
  3. 7. Atoms with the same number of protons but different numbers of neutrons
  4. 8. The columns in the periodic table
  5. 9. Group 1 metals (_____ metals)
Down
  1. 2. The _______ Number tells you the number of protons in an atom
  2. 3. Group 7 non metals
  3. 5. The ______ Gases found in Group 0
  4. 6. The rows in the periodic table