group 2

• Describe the trend in ionisation energy down group 2.


  There is an extra electron shell compared to the one above, extra inner shells shield the outer electrons from the attraction of the nucleus. The extra shells means the outer electrons are further away from the nucleus.
• Group 2 react with water to produce?

  Hydroxides. M(OH)2
• Group 2 burn in oxygen to form?

  Oxides MO
• Group 2 react with chlorine to form?

  Chlorides, MCl2
• Explain the trend in reactivity of Group 2 down the group.

  Increases. The higher the ionisation energy the less likely they are to react.
• Which group 2 oxide is insoluble.

  Beryllium oxide
• Group 2 oxides react with H20 to form?

  Hydroxides M(OH)2
• Group 2 oxides react with dilute acid to form?

  Salt, MCl2, and H2O
• Describe the solubility trend of the hydroxides down group 2.

  Solubility increases.
• Describe the solubility trend of the group 2 sulphates.

  Decreases.
• Which group 2 sulphate is insoluble?

  Barium sulfate