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2. redox of group 2 reaction with dilute acids

  • no change
  • metal is oxidised, hydrogen is reduced
  • metal is simultaneously oxidised and reduced
  • metal is reduced, hydrogen is oxidised

3. group 2 reactions with water

  • form an alkaline hydroxide M(OH)2 and hydrogen solid
  • form an alkaline hydroxide, MOH
  • form an alkaline hydroxide, M(OH)2 and hydrogen
  • form an alkaline hydroxide, M(OH)2

4. group 2 oxides reaction with water

  • form alkaline solutions of metal hydroxides (release OH)
  • form alkaline solutions of metal hydroxide which can form solid ppt through electrocution
  • form alkaline solutions of metal hydroxides (release OH) until saturated when they form solid ppt
  • form MO2

5. group 2 compounds in medicine

  • group 2 bases are often used as antiacids for indigestion
  • there is no use for them in medicine
  • group 2 bases are used as anaesthetics for surgery
  • group 2 hydroxides are used in antibiotics for better distribution
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