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4 Written questions

4 Multiple choice questions

  1. elements belonging to group two on the periodic table. They are less reactive and harder than alkali metals.
  2. the principle that chemical properties of the elements are periodic functions of their atomic numbers
  3. recurring or reappearing from time to time
  4. horizontal row of elements in the periodic table

4 True/False questions

  1. groupVertical column in the periodic table

          

  2. Halogensgroup 17; contains nonmetals; 7 electrons in its outermost energy level; very reactive; poor conductors of electric current; never in its uncombined form in nature; combine with most metals to form salts

          

  3. Noble Gassesgroup 17; contains nonmetals; 7 electrons in its outermost energy level; very reactive; poor conductors of electric current; never in its uncombined form in nature; combine with most metals to form salts

          

  4. Akali Metalselements belonging to group two on the periodic table. They are less reactive and harder than alkali metals.

          

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