Periodic Table

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Across
  1. 1. What element has the symbol “O”?
  2. 5. - Who created the periodic table?
  3. 7. Which group has the atomic radius increased due to the extra shell of electrons for each element?
  4. 8. How many atoms does the symbol “Al” have?
  5. 10. What element is at group two period four?
Down
  1. 2. Which group is noble gas in?
  2. 3. What is in group one period one?
  3. 4. Which period does potassium belong to?
  4. 6. What is a non-metal structure/ bonding called?
  5. 9. What element has the symbol “He”?