Aluminum

Aluminium has high density.

Aluminium is the second most malleable metal.

What are the uses of aluminium?

Write down the electronic configuration of aluminium.

Aluminium is a good _____ of electricity.

Aluminium has low density when compared to other metals.

What are the physical properties of aluminium?

Aluminium is not malleable and ductile.

Explain the reaction of aluminium with water.

Explain the thermal and electrical properties of aluminium.

${\mathrm{AlCl}}_3$ behaves like a Lewis acid. Substantiate this statement.

Comprehension:

What is the compound A from the following observations?

Some observations related to an unknown inorganic substance A are presented below.

$1.$ A has a molecular weight of 267, and it is a yellowish-white deliquescent solid, and it sublimes on heating.

$2.$ A reacts violently with water, forming solution B.

$3.$ When a solution of ${\mathrm{NH}}_4\mathrm{Cl}$ and ${\mathrm{NH}}_4\mathrm{OH}$ is added to solution B, a white gelatinous precipitate is obtained.

$4.$ A sample of B also gives a curdy white precipitate C on addition of dilute nitric acid and silver nitrate solution. This white precipitate C readily dissolves when dilute ${\mathrm{NH}}_4\mathrm{OH}$ is added, though a gelatinous white precipitate D is formed in its place with excess ${\mathrm{NH}}_4\mathrm{OH}.$

$5.$ Precipitate D is filtered off and is dissolved in excess $\mathrm{NaOH}$ to give a clear solution E.

$6.$ When ${\mathrm{CO}}_2$ is passed through solution E, compound D is re-precipitated.

$7.$ Substance A unchanged in dry ether, when this solution is reacted with excess $\mathrm{LiH},$ it transforms to G.

Assertion $\left(\mathrm{A}\right)$ : ${\mathrm{AlCl}}_3$ exists as a dimer through halogen bridged bonds.

Reason $\left(\mathrm{R}\right)$ : ${\mathrm{AlCl}}_3$ gets stability by accepting electrons from the bridged halogen

The dissolution of $\mathrm{A}\mathrm{l}{\left(\mathrm{O}\mathrm{H}\right)}_3$ by a solution of $\mathrm{N}\mathrm{a}\mathrm{O}\mathrm{H}$ results in the formation of:

${\mathrm{AlCl}}_3$is an electron deficient compound but ${\mathrm{AlF}}_3$is not, this is because,

Hydrated aluminium chloride is ionic compound and soluble in water giving

Select the correct statements from the following.

Chose the correct statements from the following

Which of the following statements about anhydrous aluminum chloride is correct ?