Anomalous Behaviour of Beryllium

Give reason why beryllium does not exhibit coordination numbers more than four.

Beryllium does not exhibit coordination numbers more than _____ as in its valence shell there are only four orbitals.

Beryllium does exhibit coordination number more than four.

Write a short note on beryllium oxide.

Like aluminium, beryllium is not readily attacked by acids because of the presence of an oxide film on the surface of the metal. This exhibits _____ between beryllium and aluminium.

Both aluminium and beryllium remain passive towards acids.

Explain how beryllium and aluminium reacts with an acid. Name the phenomenon exhibited by these two metals.

Explain the structural features of the compound formed when aluminium reacts with chlorine.

On reaction with chlorine, aluminium (III) chloride forms a dimer because

Aluminium reacts with chlorine to form aluminium chloride which exists as

Comment on the similarity of chlorides of beryllium and aluminium.

Mention the reason for the anomalous behaviour of beryllium. Give its uses.

Mention the catalyst used in the Friedel craft's reactions.

Complete the given reaction of aluminium with sodium hydroxide:

$2\mathrm{Al}+2\mathrm{NaOH}+6{\mathrm{H}}_2\mathrm{O}\stackrel{ }{\to }2\mathrm{Na}\left[\mathrm{Al}{\left(\mathrm{OH}\right)}_4\right]+?$

Identify the product of the reaction between beryllium and sodium hydroxide:

$\mathrm{Be}+2\mathrm{NaOH}+2{\mathrm{H}}_2\mathrm{O}\stackrel{ }{\to }?+{\mathrm{H}}_2$

Explain the reaction of beryllium with concentrated acid.

Beryllium is kinetically inert to water because of the formation of 

Beryllium can exhibit a coordination number of $4$ in its compounds.