The nature of the intermediates formed from the excited state of the I- ion was considered. The scavenging mechanism by N2O was investigated. Nitrous oxide was found to act as a specific scavenger for electrons. Semiquantitative treatment of the scavenging mechanisms is carried out. Chemical evidence for the transient formation of electrons in the photochemical system is presented. The mechanism of radical formation by the dissociation of the excited state is discussed.