Periodic Table

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Across
  1. 2. It´s after Zinc
  2. 4. Group six,period 4
  3. 6. It´s mass number is 238
  4. 8. It´s equation is CU+O
  5. 9. It´s mass number is 40
Down
  1. 1. It´s atomic number is 12
  2. 3. It´s group is 6 and period 7
  3. 5. It´s Barium Oxide
  4. 7. It´s symbol is Na