Question

For $B{Cl}_3,Al{Cl}_3$ and $Ga{Cl}_3$, the increasing order of ionic character is:

• A. $B{Cl}_3<Al{Cl}_3<Ga{Cl}_3$
• B. $Ga{Cl}_3<Al{Cl}_3<B{Cl}_3$
• C. $B{Cl}_3<Ga{Cl}_3<Al{Cl}_3$
• D. $Al{Cl}_3<B{Cl}_3<Ga{Cl}_3$

Answer 1

The correct option is C $B{Cl}_3<Ga{Cl}_3<Al{Cl}_3$

Since the ionic character is inversely proportional to the polarising power of cation.

Therefore, the correct order is:

$B{Cl}_3<Ga{Cl}_3<Al{Cl}_3$

Hence, option C is correct.