Periodic Crossword - MT

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Across
  1. 3. minimum amount of energy required to move an electron from an atom in the gaseous state
  2. 7. odorless and colorless
  3. 8. chemical element with properties of both metals and nonmetals
  4. 9. reduction in the effective nuclear charge on the electron cloud
  5. 12. produce ionic compounds known as salts
  6. 13. measure of the size of an atom
  7. 14. 18 of these in the Periodic Table
  8. 15. hard, metallic-looking solids
Down
  1. 1. the electrons in the outermost shell
  2. 2. example: 2s2, 2p4
  3. 4. any of the six chemical elements that make up group 1a of the periodic table
  4. 5. form 'alkaline' metal solutions
  5. 6. best known for formulating the Periodic Law
  6. 10. soft, often colorful
  7. 11. 7 of these in the Periodic Table