Write the similarity in the behaviour of beryllium and aluminium .

What is the similarity in the properties of beryllium and aluminium? Write the reasons for the similarity.

Write a note on the anomalous behaviour of beryllium.

Write any three important similarities between boron and aluminium.

Give some examples for metals other than beryllium and aluminium that becomes passive on. treatment with concentrated nitric acid.

Write an essay on the anomalous behaviour of Boron ?

Write the similarity criterion by which the given pair of triangles are similar.