Group 2

• Reactivity

  As you go down the group reactivity increases.

  • The outer electrons get further away from the nucleus, reducing the attraction between the attraction between the nucleus and the electrons.
  • electron shielding increases as there are more electrons
• Ionisation energy

  ionisation energy decreases as you go down the group
• Reactions as bases

  Group 2 elements act basic so neutralise acids
• Equation with acids

  Group 2 metal + acid -> metal salt + water
• reactions with water

  Group 2 metals react with water to produce an alkaline solution
• Equation with water

  Group 2 metal + water -> metal hydroxide
• Trends in group 2

  Magnesium is only partially soluble.

  As you go down the group the metal hydroxides become increasingly soluble so form more basic solutions.
• Uses of group 2 metals

  group 2 metal hydroxides are used as antacids