The Periodic Table

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12345678910111213141516171819
Across
  1. 1. Region around the nucleus that is the probable location of an electron
  2. 3. An element that has characteristics of metals and nonmetals
  3. 6. A positive ion
  4. 7. The radius of an atoms ion
  5. 10. A vertical column of the periodic table
  6. 11. Created a table in which elements with similar properties were grouped together
  7. 12. The number of protons in the nucleus of each atom of an element
  8. 14. An atom that has a positive or negative charge
  9. 15. An element that is a poor conductor of heat and electricity
  10. 16. The physical and chemical properties of the elements are periodic functions of their atomic numbers
  11. 17. An electron available to be lost, gained, or shared
  12. 18. Energy needed to remove an electron from an atom
  13. 19. The smallest unit of an element
Down
  1. 2. Indicates the size of an atom
  2. 4. A negative ion
  3. 5. Most reactive nonmetals
  4. 8. A measure of the ability of an atom to attract electrons
  5. 9. A horizontal row of elements on the periodic table
  6. 12. Most reactive metals
  7. 13. An element that is a good conductor of heat and electricity