Question

Beryllium shows diagonal relationship to aluminum.Bring out 3 points of similarities between them to justify this statement.
Plss ans this que very important....

Answer 1

1. Both metals have tendency to form covalent compounds

Eg. The chlorides of both being covalent are soluble in organic solvents

2. Both BeCl2 and AlCl3 act as a lewis acids and are used as Friedel - crafts catalysts.

3. These two elements have same elecronegativity and the polarising power ie. charge / radius ratio of their ions are very similar

Answer 2

1) Hydroxide of both react with excess alkali to form respective ions.

2) Both have tendency to form complexes.

3) Chlorides of both possess capacity to be soluble in organic solvents.