Chemical Properties of Group 13 Elements

Explain the hexagonal structure of boron nitride.

Write the reaction of boron with dinitrogen.

Write the reaction of aluminium with dinitrogen.

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

Aluminium (III) chloride forms a dimer because aluminium_______

Boron compounds behave as Lewi's acids because of their ______

Which of the following metallic oxides exhibit amphoteric nature?

Which of these statements is not true ?

Sodium borohydride upon treatment with iodine produces a Lewis acid $\left(\mathrm{X}\right),$ which on heating with ammonia produces a cyclic compound $\left(\mathrm{Y}\right)$ and a colorless gas $\left(\mathrm{Z}\right). \mathrm{X}, \mathrm{Y}$ and $\mathrm{Z}$ are

Arrange the following in increasing order of Lewis acid Character.

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

A compound $\mathrm{X},$ of boron reacts with ${\mathrm{NH}}_3$ on heating to give another compound $\mathrm{Y}$ which is called inorganic benzene. The compound $\mathrm{X}$ can be prepared by treating ${\mathrm{BF}}_3$ with Lithium aluminum hydride. The compounds $\mathrm{X}$ and $\mathrm{Y}$ are represented by the formulas.

${\mathrm{AlF}}_3$ is soluble in $\mathrm{HF}$ only in the presence of $\mathrm{KF}$. It is due to the formation of 

Which of the following statements is incorrect?

Concentrated ${\mathrm{HNO}}_3$ is stored in containers made up of

For the properties mentioned, the correct trend for the different species is in

For ${\mathrm{BCl}}_3, {\mathrm{AlCl}}_3$and ${\mathrm{GaCl}}_3$ the increasing order of ionic character is

Predict the correct shape of ${\mathrm{BH}}_4^{-}$.

Aluminium is not acted upon by pure water as - 

The stability of +1 oxidation state among $\mathrm{Al}$, $\mathrm{Ga}$, $\mathrm{In} \mathrm{and} \mathrm{Tl}$ increases in the sequence:

Which of the following statements is incorrect?