AS Chemistry - Ionisation Energies

Ionisation is the removal of electrons

• O(g) -> O+(g)   + e-
• O(g) -> O2+(g) + e-
  • The atom must always be gaseous

Factors affecting ionisation energy:

• Nuclear charge
  • More protons means the nucleus is more positively charged, this causes a stronger attraction of electrons
• Distance from nucleus
  • If electrons are closer to the nucleus,…