The stability of $+ 1$ oxidation state increases in the sequence:

G a < I n < A l < T l

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A l < G a < I n < T l

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T l < I n < G a < A l

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I n < T l < G a < A l

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Solution

The correct option is B $A l < G a < I n < T l$
$A r < G a < I n < T l$ is the correct order because, as we go down the group, the stability of low oxidation state increases, this is generally due to inert pair effect.

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Similar questions

+ 1

A l

G a

I n

T l

A l^{+}, G a^{+}, I n^{+}, T l^{+}

B > T l > I n > G a > A l

T l > I n > G a > B > A l

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