The Periodic Table

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Across
  1. 2. A charged atom or molecule
  2. 4. Most of the elements on the periodic table are grouped as
  3. 7. Chemical property describing an atom's ability to attract and bind with electrons
  4. 10. Metallic character from left to right
  5. 11. Very reactive metals that do not occur freely in nature
  6. 13. The total distance from an atom’s nucleus to the outermost orbital of electron
Down
  1. 1. Elements to the right of the stair-step line
  2. 3. A horizontal line of the periodic table
  3. 5. The amount of energy required to break a bond(s) to change the solid phase of a substance to a liquid
  4. 6. Elements found along the stair-step line that distinguishes metals from non-metals
  5. 8. A vertical group of the periodic table
  6. 9. Atomic radius from left to right
  7. 12. Metals generally posses a melting point