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Element Crossword Puzzles
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The Halogen Group
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4.Discovered when too much sulfuric acid was accidentally added to seaweed ash.
5.It is estimated that there is no more than 30 grams of this element in the earth's crust at any one time.
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1.This element is a liquid at room temperature.
2.This element combines with an alkali metal to form table salt.
3.This is the most reactive of all elements.
  
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