Unit 4 - Periodic Table & Electron Configurations

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Across
  1. 4. a vertical column on the periodic table also called a family
  2. 5. elements in group 2 that have two valence electrons and are reactive metals
  3. 6. elements in group 18 that have full outer electron shells and are very stable and nonreactive
  4. 9. elements in group 17 that readily form salts with alkali metals
  5. 10. the energy required to remove an electron from an atom
  6. 13. the series of rare-earth elements found in period 6
  7. 14. an electron in the outermost energy level of an atom
  8. 15. the energy change that occurs when an atom gains an electron
  9. 19. elements in groups 3 through 12 that are typically solid metals at room temperature
  10. 20. an element that has properties of both metals and nonmetals and is located along the staircase
Down
  1. 1. an element that is typically ductile malleable lustrous and a good conductor of heat and electricity
  2. 2. the arrangement of electrons in an atom’s orbitals
  3. 3. the organized arrangement of all known elements by increasing atomic number
  4. 7. the distance from the center of an atom’s nucleus to its outermost electron
  5. 8. the series of radioactive elements found in period 7
  6. 11. the ability of an atom to attract electrons in a chemical bond
  7. 12. elements in group 1 that have one valence electron and are soft reactive metals
  8. 16. a horizontal row on the periodic table
  9. 17. a region of space around the nucleus where an electron is most likely to be found
  10. 18. an element that is typically a poor conductor of heat and electricity and may be dull or brittle