Module 2

Module 2

1. Ionisation Energies

   • The FIRST IONISATION ENERGY of an element is the energy required to remove one electron from each atom in one mole of gaseous atoms to form one mole of gaseous 1+ ions.
   • The SECOND IONISATION ENERGY of an element is the energy required to remove one electron from each ion in one mole of gaseous 1+ Ions to form one mole of gaseous 2+ ions.