Beryllium shows diagonal relationship with aluminium.

Which of the following similarity is incorrect ?

$\mathrm{Be}{\left(\mathrm{OH}\right)}_2$ like $\mathrm{Al}{\left(\mathrm{OH}\right)}_3$ is basic

Be like Al is rendered passive by ${\mathrm{HNO}}_3$

Be forms beryllates and Al forms aluminates

${\mathrm{Be}}_2\mathrm{C}$ like ${\mathrm{AlC}}_3$ yields methane on hydrolysis