Periodic Table

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Across
  1. 2. members of group 7A family that are highly reactive
  2. 4. the same element but has a different mass
  3. 5. name of the vertical columns on the periodic table where the elements have similar chemical properties
  4. 7. ______ electrons are electrons in the outermost energy level
  5. 9. _____ metals located in the middle of the periodic table groups 3-12
  6. 10. _____ energy is the energy required to remove an electron from an atom
  7. 11. these elements are shiny, lustrous, and are good conductors
Down
  1. 1. horizontal rows of elements on the periodic table that are numbered based on energy levels
  2. 3. the ability for an element to attract an electron
  3. 6. _____ metals are the group 1 family name
  4. 8. members of the s-block are found on which side of the periodic table