Be and Al show similarities in properties due to the diagonal relationship except in the property X given…

Be and Al show similarities in properties due to the diagonal relationship except in the property X given below. What is X?
  1. Both form basic oxides and hydroxides.
  2. Ions of both have a strong tendency to form complexes.
  3. In the vapour phase, chlorides of both have Cl- bridged chloride structure.
  4. Chlorides of both are soluble in organic solvents.

Solution

oth metals have the tendency to form covalent compounds

 

BeCl2 and AlCl3 act as lewis acids and use in friedal crafts catalyst

Both metals dissolves in alkalies to form soluble complexes beryllates and aluminates

The oxides of both are hard, high melting insoluble solids

The oxides and hydroxides of both are amphoteric in nature

Carbides of both the metals react with water Liberating methane gas

Oxides and hydroxides of the given elements are amphoteric in nature.

So,

Both can not form basic oxide.

Asked in: AP EAMCET 2018 (25 Apr Shift 1)

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