Question

Beryllium shows a diagonal relationship with aluminium. Which of the following similarity is incorrect?

• A. $B{e}_{2}C$ like $A{l}_4{C}_3$ yields methane on hydrolysis .
• B. Be like Al is rendered passive by $HN{O}_3$.
• C. $Be(OH{)}_2$ like $Al(OH{)}_3$ is basic.
• D. Be forms beryllates A1 forms aluminates.

Answer 1

The correct option is C $Be(OH{)}_2$ like $Al(OH{)}_3$ is basic.

The two structures involve the only movement of electrons and not of atoms or groups, hence these are resonating structures. Both metals have the tendency to form covalent compounds Diagonal relationship of Be with Al Because of its small size. Be differs from other earth alkaline earth metals but resembles in many of its properties with Al on account of the diagonal relationship.

The correct option is that $Be(OH{)}_2$ like $Al(OH{)}_3$ both are basic in nature.

The correct answer is C.