Beryllium shows diagonal relationship to aluminum.Bring out 3 points of similarities between them to justify this statement.
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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
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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.
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