Fun with the Periodic Table!

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Across
  1. 2. Energy change that occurs when a neutral atom gains an electron
  2. 3. Name of element in groups three to twelve
  3. 7. The measure of an atom in a chemical bond to attract an electron
  4. 8. Category of elements that is the smallest on the table and shares the properties of the other two categories
  5. 9. Name of nonmetal in group seventeen
  6. 10. Most numerous type of element on the periodic table
Down
  1. 1. The energy required to remove an electron from an atom
  2. 4. Inventor of the Periodic Table
  3. 5. Name of element in group one
  4. 6. Measured as half the distance between two bonded atoms of the same element