Given below are the pairs of group 13 element showing their relation in terms of atomic radius. (B < Al),(Al < Ga),(Ga < In) and (In < Tl) Identify the elements present in the incorrect pair and in that pair find out

Correct answer: A. 31 Size order aligned & Al Ga & Al^ 3+ Ga^ 3+ aligned Atomic number of Ga is 31

JEE Main 20254 AprilMorning Shift

JEE Main 2025 · 4 April · Morning Shift · Chemistry · Classification of Elements and Periodicity in Properties

Given below are the pairs of group 13 element showing their...

Given below are the pairs of group 13 element showing their relation in terms of atomic radius.

(\mathrm{B} < \mathrm{Al}),(\mathrm{Al} < \mathrm{Ga}),(\mathrm{Ga} < \mathrm{In}) \text{\text{ 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)

that the other one. The atomic number of the element

(\mathrm{X})$ is

A. 31

Size order

\begin{aligned}<br />& \mathrm{Al} \gt \mathrm{Ga} \\<br>& \mathrm{Al}^{3+} \lt \mathrm{Ga}^{3+}<br />\end{aligned}

Atomic number of Ga is 31