Tl⁺: E° = -1.59 V, ΔG° = +250 kJ, non-spontaneous

Ga⁺: E° = -0.15 V, ΔG° = -28.9 kJ, spontaneous

The +1 oxidation state is the most stable state for Tl, but it is not as common for Ga, because the disproportionation reaction for the formation of Tl⁺³ is non-spontaneous, while it is spontaneous for Ga³⁺_.

Tl⁺: E° = -1.59 V, ΔG° = +307 kJ, non-spontaneous

Ga⁺: E° = +0.15 V, ΔG° = -28.9 kJ, spontaneous

The +1 oxidation state is the most stable state for Tl, but it is not as common for Ga, because the disproportionation reaction for the formation of Tl⁺³ is non-spontaneous, while it is spontaneous for Ga³⁺_.

Tl⁺: E° = +2.59 V, ΔG° = -250 kJ, spontaneous

Ga⁺: E° = -1.15 V, ΔG° = +28.9 kJ, non-spontaneous

The +1 oxidation state is the most stable state for Tl, but it is not as common for Ga, because the disproportionation reaction for the formation of Tl⁺³ is spontaneous, while it is non-spontaneous for Ga³⁺_.

Tl⁺: E° = +2.99 V, ΔG° = -153 kJ, spontaneous

Ga⁺: E° = -1.25 V, ΔG° = +33.9 kJ, non-spontaneous

The +1 oxidation state is the most stable state for Tl, but it is not as common for Ga, because the disproportionation reaction for the formation of Tl⁺³ is spontaneous, while it is non-spontaneous for Ga³⁺_.