Given below are the pairs of group 13 elements showing their relation in terms of atomic radius. $(\mathrm{B}<\mathrm{Al}),(\mathrm{Al}<\mathrm{Ga}),(\mathrm{Ga}<\mathrm{In})$ and $(\mathrm{In}<\mathrm{Tl})$ Identify the elements present in the incorrect pair and in that pair find out the element (X) that has higher ionic radius $\left(\mathrm{M}^{3+}\right)$ than the other one. The atomic number of the element $(\mathrm{X})$ is
Solution
<p>Size order</p>
<p>$$\begin{aligned}
& \mathrm{Al}>\mathrm{Ga} \\
& \mathrm{Al}^{3+}<\mathrm{Ga}^{3+}
\end{aligned}$$</p>
<p>Atomic number of Ga is 31</p>
About this question
Subject: Chemistry · Chapter: p-Block Elements · Topic: Group 13: Boron Family
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