Question

Aluminium has a diagonal relationship with:

• A. $Li$
• B. $Si$
• C. $Be$
• D. $B$

Answer 1

The correct option is C $Be$

A diagonal relationship is said to exist between certain pairs of diagonally adjacent elements in the second and third periods of the periodic table. These pairs exhibit similar properties. $Be$ and $Al$ have various similar properties like electronegativity, the polarising power etc. So, these two show diagonal relationship.