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5 Written questions

5 Multiple choice questions

  1. the electron(s) that are in the outermost energy level of an atom
  2. elements that form a bridge between the elements on the left and right sides of the periodic table
  3. elements that are good conductors of heat and electricity
  4. elements of group 2A; have 2 valence electrons and are reactive
  5. the horizontal rows of the periodic table of the elements

5 True/False questions

  1. periodic tablethe repetition of a set of properties, row after row


  2. halogenselements of group 7A; have 7 valence electrons and are highly reactive


  3. Variation across a periodFrom left to right, the elements become less metallic and more nonmetallic in their properties.


  4. noble gaseselements of group 8A; have 8 valence electrons (exception is He) and are inert


  5. periodic lawan arrangement of elements in columns, ordered according to atomic numbers


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