Both boron and aluminium show difference in properties from the remaining members of group 13. This because

Options

A. Both B and Al have smaller size as compared to others members of the family.
B. Both B and Al have high value of ionization energy
C. Both B and Al have only the valence eletrons `(ns2 np1)` outside the noble gas core while the reamaining elements have filled d and `f-orbitals` in between the noble gases and the valance electrons
D. None of the above.

Answer

C

Explanation

The difference in properties of B and Al from the remaining members of group 13 is due to the difference in their electromagnetic configuration as stated