Ions and Oxidation Numbers WS Name Symbol # of p+ # of e- Bohr model Lewis Structure lose or gain e- How many lost or gained new # of e- in ion Oxidation number Ion symbol aluminum Li1+ 17 6 Name Symbo l # of p+ nitrogen Ne 4 # of e- Bohr model Lewis Structure lose or gain e- How many lost or gained new # of e- in ion Oxidation number Ion Symbol