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The $E^\ominus$ values for $Al^+/Al=+0.55$ V and $Tl^+/Tl=-0.34$ V; $Al^{3+}/Al=-1.66$ V and $Tl^{3+}/Tl=+1.26$ V. Identify the incorrect statement
A
Al is more electropositive than Tl
B
$Tl^{3+}$ is a good reducing agent than $Tl^{1+}$
C
$Al^+$ is unstable in solution
D
Tl can be easily oxidised to $Tl^+$ than $Tl^{3+}$
Detailed Solution
$Tl^{3+}$ has a highly positive reduction potential, meaning it is readily reduced, i.e. it acts as a good oxidising agent, not a reducing agent — so the statement that $Tl^{3+}$ is a good reducing agent compared to $Tl^{1+}$ is incorrect.