IONISATION ENERGY

• WHAT IONS DO GROUP 2 FORM?

  2+ (lose 2 outer electrons)
• WHAT IS COMPLETE IONISATION ENERGY?

  sum of first ionisation energy and second ionisation energy
• WHAT HAPPENS TO FIRST IONISATION ENERGY DOWN GROUP 2?

  decreases
• WHAT HAPPENS TO SECOND IONISATION ENERGY DOWN GROUP 2?

  decreases
• WHY DOES IONISATION ENERGY DECREASE DOWN GROUP 2?

  • less energy to remove outer electrons
  • become further away from positive nucleus
  • greater shielding effect