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5 Written questions

5 Multiple choice questions

  1. elements of group 8A; have 8 valence electrons (exception is He) and are inert
  2. elements of group 7A; have 7 valence electrons and are highly reactive
  3. an arrangement of elements in columns, ordered according to atomic numbers
  4. the horizontal rows of the periodic table of the elements
  5. elements of group 1A; have 1 valence electron and are highly reactive

5 True/False questions

  1. nonmetalselements that are poor conductors of heat and electricity


  2. atomic mass unit (amu)units used to measure the mass of atoms; defin ed as 1/12 the mass of carbon-12


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


  4. periodic lawthe repetition of a set of properties, row after row


  5. transition metalselements that form a bridge between the elements on the left and right sides of the periodic table


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