chapter 7 - periodicity key terms

Question 1

First ionisation energy

Answer 1

the energy required to remove one electron from each atom in one mole of gaseous atoms of an element to form one mole of gaseous 1+ ions

Question 2

second ionisation energy

Answer 2

the energy required to remove one electron from each atoms to form one mole of gaseous 1+ ions of an element to form one mole of gaseous 2+ ions