Periodic Table

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Across
  1. 3. smallest particle of an element
  2. 4. This element forms amphoteric oxide
  3. 5. block of element that has 17 protons
  4. 9. horizontal row in period table determined by valence electron
  5. 11. The minimum energy required to remove one mole electron from outermost orbital in one mole of neutral gaseous atom
  6. 12. This distance between an atom's nucleus and outer electron shell
  7. 13. forms acidic oxide with electronic configuration [Ne] 3s² 3p²
Down
  1. 1. another name for group 1 element
  2. 2. the elements in periodic table arranged according to this
  3. 6. this element is in pencils
  4. 7. forms basic oxide with proton number 11
  5. 8. alternative name for group 18 elements
  6. 10. vertical row in periodic table determined by principle quantum number