Triiodide ions have been reported as the predominant species in aqueous solution owing to the low stability of other higher order polyiodides 18,19. The dominant redox reaction in the system is ...
The metal atoms are losing electrons to form an ion. They are being oxidised. \(Mg(s) \to Mg_{}^{2 + }(aq) + 2e_{}^ - \) This is known as an ion-electron equation. Reduction is the opposite of ...