Name the Element

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Across
  1. 2. 3rd noble gas
  2. 4. [Kr] 5s2 4d5
  3. 7. Element #25
  4. 10. 1s2 2s1
  5. 12. [Kr] 5s2
Down
  1. 1. Most electronegative element
  2. 3. [Xe] 6s2 4f14
  3. 5. Element with molar mass of 69.723 g/mol
  4. 6. [Kr] 5s2 4d10
  5. 8. Superman's home planet
  6. 9. Rhymes with "moron"
  7. 11. __ and J sandwich