Periodic Table Elements

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Across
  1. 5. Named for a Greek word meaning 'strange, foreign.'
  2. 6. Ag
  3. 7. Hierro
  4. 8. Brittle solid, colored pale yellow
  5. 10. Lightest Halogen
  6. 12. Mn
  7. 14. Antimony
  8. 16. Named for a Greek word meaning 'hidden.'
  9. 18. #1
Down
  1. 1. Most widespread metal on Earth
  2. 2. One of two elements that does not evaporate at 5772 K (sun temperature)
  3. 3. Glows reddish-orange in a vacuum discharge tube
  4. 4. Lightest Noble Gas
  5. 6. Na
  6. 9. Radioactive isotope of Carbon
  7. 11. Most abundant element in the atmosphere
  8. 13. First discovered noble gas
  9. 15. Francium's state of matter at 21 degrees Celsius
  10. 17. This element produces a lilac flame in the flame test.