First slide

Atomic and physical properties

Question

The process, $M (s) \to M^{+ 3} (aq)$ is least feasible when ‘M’ is

Easy

A

Al
B

Tl
C

Ga
D

In

Solution

$E_{{Tl}^{+ 3} / Tl}^{o}$ is positive (among 13th group elements)
$∴ Tl (s) \to {Tl}^{+ 3} (aq) is least feasible . {Tl}^{3 +} (aq) \to Tl (s) is most feasible .$

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