Considering only ions with charges of + 1, + 2, - 1 and - 2, or neutral atoms, give the symbols for 4 species that are isoelectronic with the oxide ion, O2-.

A species that is isoelectronic with the oxide ion will have the same electron configuration of electrons as as the oxide ion.

4 species that are isoelectronic with the oxide ion are F^ (-), Ne, Na^ (+), and Mg^ (2+).

All of the electron configuration of these ions end at 2p⁶.