Group 13 Elements: The Boron Family

 The atomic radius of gallium is more than that of aluminium.

What is the reason behind gallium having less atomic radius than aluminium?

Aluminium, being able to form $+3$ ions easily, is more electropositive than thallium.

Predict the formation of ${\mathrm{M}}^{3+}$ ion in the solution and compare the electropositive character of two metals, if the standard electrode potential values, ${\mathrm{E}}^{⊝}$ for ${\mathrm{Al}}^{3+}/\mathrm{Al}$ is $-1.66 \mathrm{V}$ and that of ${\mathrm{Tl}}^{3+}/\mathrm{Tl}$ is $+1.26 \mathrm{V}$.

The boiling point of gallium is quite high.

What is the boiling point of gallium?

Explain the hexagonal structure of boron nitride.

Write the reaction of boron with dinitrogen.

Write the reaction of aluminium with dinitrogen.

Which of the following metallic oxides exhibit amphoteric nature?

The characteristic valence shell configurations of group-$13$ and $14$ elements are respectively

How is the electronegativity vary among the elements of group$-13$ and why?

Arrange the following in increasing order of Lewis acid Character.

${\mathrm{BF}}_3, {\mathrm{BCl}}_3, {\mathrm{BBr}}_3$ and ${\mathrm{BI}}_3$

The tendency of $\mathrm{X}$ in ${\mathrm{BX}}_3 \left(\mathrm{X}=\mathrm{F}, \mathrm{Cl}, \mathrm{OMe}, {\mathrm{NMe}}_2\right)$ to form a $\pi$-bond with boron follows the order

Nitrogen is comparatively an inert element since

What is the correct form of the electronic configuration of thallium$\left(\mathrm{TI}\right)$ element?

The bond dissociation energy of $\mathrm{B}-\mathrm{F}$ in ${\mathrm{BF}}_3$ is $646 \mathrm{kJ} {\mathrm{mol}}^{-1}$ whereas that of $\mathrm{C}-\mathrm{F}$ in ${\mathrm{CF}}_4$ is $515 \mathrm{kJ} {\mathrm{mol}}^{-1}$. The correct reason for higher $\mathrm{B}-\mathrm{F}$ bond dissociation energy as compared to that of $\mathrm{C}-\mathrm{F}$ is:-

Write the order of boiling point of boron family elements.

On moving down the group, the boiling points of boron family elements _____.