TI Pt Cr3+ (1 M) Cr2+ (1 M) T13+ (1 M) T13+ (aq) + 3e- TI (s) Cr2+ (aq) → Cr3+ (aq) + e- The species being oxidized is and the species being reduced is respectively. Note: "TI" is the symbol for thallium (element #81). Pt/ TI O T / Cr2* O Cr/T O Cr/TI • TI/ Cr

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