Chemistry Crossword!

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Across
  1. 4. Which is the most inert gas?
  2. 6. Which halogen is found in liquid state at room temperature?
  3. 8. What are the particles present in the nucleus known as?
  4. 9. Which alkali metal has the highest electronegativity?
Down
  1. 1. Which is the lightest element known till now?
  2. 2. What is group 17 called as?
  3. 3. While moving down a group, the metallic character ______?
  4. 5. The repeating patterns or trends in the properties of the periodic table
  5. 7. Which element has the highest ionization potential in the periodic table